diff --git a/comfy_panel/config.lua b/comfy_panel/config.lua
index e0664407..62bce505 100644
--- a/comfy_panel/config.lua
+++ b/comfy_panel/config.lua
@@ -287,7 +287,7 @@ local fortress_functions = {
             get_actor(event, '[Collapse]', 'has enabled the collapse function. Collapse will occur after wave 100!')
         else
             Module.collapse_grace = false
-            get_actor(event, '[Collapse]', 'has disabled the collapse function. You must reach zone 2 for collapse to occur!')
+            get_actor(event, '[Collapse]', 'has disabled the collapse function. You must breach the first zone for collapse to occur!')
         end
     end,
     ['comfy_panel_spill_items_to_surface'] = function(event)
@@ -438,7 +438,13 @@ local function build_config_gui(data)
         if not poll_table[player.index] then
             switch_state = 'left'
         end
-        add_switch(scroll_pane, switch_state, 'comfy_panel_poll_no_notify_toggle', 'Notify on polls', 'Receive a message when new polls are created and popup the poll.')
+        add_switch(
+            scroll_pane,
+            switch_state,
+            'comfy_panel_poll_no_notify_toggle',
+            'Notify on polls',
+            'Receive a message when new polls are created and popup the poll.'
+        )
         scroll_pane.add({type = 'line'})
     end
 
@@ -487,7 +493,13 @@ local function build_config_gui(data)
         if bottom_frame and bottom_frame.portable then
             switch_state = 'left'
         end
-        add_switch(scroll_pane, switch_state, 'comfy_panel_portable_button', 'Position - portable', 'Toggle to select if you want the bottom button to be portable or not.')
+        add_switch(
+            scroll_pane,
+            switch_state,
+            'comfy_panel_portable_button',
+            'Position - portable',
+            'Toggle to select if you want the bottom button to be portable or not.'
+        )
         scroll_pane.add({type = 'line'})
     end
 
@@ -623,7 +635,13 @@ local function build_config_gui(data)
             if full.fullness_enabled then
                 switch_state = 'left'
             end
-            add_switch(scroll_pane, switch_state, 'comfy_panel_disable_fullness', 'Inventory Fullness', 'Left = Enables inventory fullness.\nRight = Disables inventory fullness.')
+            add_switch(
+                scroll_pane,
+                switch_state,
+                'comfy_panel_disable_fullness',
+                'Inventory Fullness',
+                'On = Enables inventory fullness.\nOff = Disables inventory fullness.'
+            )
 
             scroll_pane.add({type = 'line'})
 
@@ -638,7 +656,7 @@ local function build_config_gui(data)
                 switch_state,
                 'comfy_panel_offline_players',
                 'Offline Players',
-                'Left = Enables offline player inventory drop.\nRight = Disables offline player inventory drop.'
+                'On = Enables offline player inventory drop.\nOff = Disables offline player inventory drop.'
             )
 
             scroll_pane.add({type = 'line'})
@@ -652,7 +670,7 @@ local function build_config_gui(data)
                 switch_state,
                 'comfy_panel_collapse_grace',
                 'Collapse',
-                'Left = Enables collapse after wave 100.\nRight = Disables collapse - you must reach zone 2 for collapse to occur.'
+                'On = Enables collapse after wave 100.\nOff = Disables collapse - you must breach the first zone for collapse to occur.'
             )
 
             scroll_pane.add({type = 'line'})
@@ -666,7 +684,7 @@ local function build_config_gui(data)
                 switch_state,
                 'comfy_panel_spill_items_to_surface',
                 'Spill Ores',
-                'Left = Enables ore spillage to surface when mining.\nRight = Disables ore spillage to surface when mining.'
+                'On = Enables ore spillage to surface when mining.\nOff = Disables ore spillage to surface when mining.'
             )
             scroll_pane.add({type = 'line'})
 
@@ -674,7 +692,13 @@ local function build_config_gui(data)
             if Module.void_or_tile then
                 switch_state = 'left'
             end
-            add_switch(scroll_pane, switch_state, 'comfy_panel_void_or_tile', 'Void Tiles', 'Left = Changes the tiles to out-of-map.\nRight = Changes the tiles to lab-dark-2')
+            add_switch(
+                scroll_pane,
+                switch_state,
+                'comfy_panel_void_or_tile',
+                'Void Tiles',
+                'On = Changes the tiles to out-of-map.\nOff = Changes the tiles to lab-dark-2'
+            )
             scroll_pane.add({type = 'line'})
 
             switch_state = 'right'
@@ -686,7 +710,7 @@ local function build_config_gui(data)
                 switch_state,
                 'comfy_panel_trusted_only_car_tanks',
                 'Market Purchase',
-                'Left = Allows only trusted people to buy car/tanks.\nRight = Allows everyone to buy car/tanks.'
+                'On = Allows only trusted people to buy car/tanks.\nOff = Allows everyone to buy car/tanks.'
             )
             scroll_pane.add({type = 'line'})
 
@@ -694,7 +718,13 @@ local function build_config_gui(data)
             if Module.allow_decon then
                 switch_state = 'left'
             end
-            add_switch(scroll_pane, switch_state, 'comfy_panel_allow_decon', 'Deconstruct', 'Left = Allows decon on car/tanks/trains.\nRight = Disables decon on car/tanks/trains.')
+            add_switch(
+                scroll_pane,
+                switch_state,
+                'comfy_panel_allow_decon',
+                'Deconstruct',
+                'On = Allows decon on car/tanks/trains.\nOff = Disables decon on car/tanks/trains.'
+            )
             scroll_pane.add({type = 'line'})
         end
     end
diff --git a/maps/mountain_fortress_v3/breached_wall.lua b/maps/mountain_fortress_v3/breached_wall.lua
index f13a9c55..3ef0b4c4 100644
--- a/maps/mountain_fortress_v3/breached_wall.lua
+++ b/maps/mountain_fortress_v3/breached_wall.lua
@@ -31,6 +31,29 @@ local scrap = {
     [15] = true
 }
 
+local clear_breach_text_and_render = function()
+    local beam1 = WPT.get('zone1_beam1')
+    if beam1 and beam1.valid then
+        beam1.destroy()
+    end
+    local beam2 = WPT.get('zone1_beam2')
+    if beam2 and beam2.valid then
+        beam2.destroy()
+    end
+    local zone1_text1 = WPT.get('zone1_text1')
+    if zone1_text1 then
+        rendering.set_text(zone1_text1, 'Collapse has started!')
+    end
+    local zone1_text2 = WPT.get('zone1_text2')
+    if zone1_text2 then
+        rendering.set_text(zone1_text2, 'Collapse has started!')
+    end
+    local zone1_text3 = WPT.get('zone1_text3')
+    if zone1_text3 then
+        rendering.set_text(zone1_text3, 'Collapse has started!')
+    end
+end
+
 local collapse_message =
     Token.register(
     function(data)
@@ -243,6 +266,7 @@ local function distance(player)
         end
 
         if not Collapse.start_now() then
+            clear_breach_text_and_render()
             Collapse.start_now(true)
             local data = {
                 position = Collapse.get_position()
diff --git a/maps/mountain_fortress_v3/functions.lua b/maps/mountain_fortress_v3/functions.lua
index 88a1830e..083b6520 100644
--- a/maps/mountain_fortress_v3/functions.lua
+++ b/maps/mountain_fortress_v3/functions.lua
@@ -203,7 +203,7 @@ local function do_magic_crafters()
                 if entity.get_output_inventory().can_insert({name = data.item, count = fcount}) then
                     entity.get_output_inventory().insert {name = data.item, count = fcount}
                     entity.products_finished = entity.products_finished + fcount
-                    data.last_tick = tick - (count - fcount) / rate
+                    data.last_tick = round(tick - (count - fcount) / rate)
                 end
             end
         end
@@ -366,9 +366,9 @@ local function add_magic_crafter_output(entity, output, distance)
     local fluidbox_index = output.fluidbox_index
     local data = {
         entity = entity,
-        last_tick = game.tick,
-        base_rate = rate,
-        rate = rate,
+        last_tick = round(game.tick),
+        base_rate = round(rate, 8),
+        rate = round(rate, 8),
         item = output.item,
         fluidbox_index = fluidbox_index
     }
@@ -929,17 +929,17 @@ function Public.set_difficulty()
     end
 
     if Diff.name == "I'm too young to die" then
-        wave_defense_table.wave_interval = 3600 - player_count * 60
+        wave_defense_table.wave_interval = 4600 - player_count * 60
         if wave_defense_table.wave_interval < 1800 or threat_check then
             wave_defense_table.wave_interval = 1800
         end
     elseif Diff.name == 'Hurt me plenty' then
-        wave_defense_table.wave_interval = 2600 - player_count * 60
+        wave_defense_table.wave_interval = 3600 - player_count * 60
         if wave_defense_table.wave_interval < 1500 or threat_check then
             wave_defense_table.wave_interval = 1500
         end
     elseif Diff.name == 'Ultra-violence' then
-        wave_defense_table.wave_interval = 1600 - player_count * 60
+        wave_defense_table.wave_interval = 2600 - player_count * 60
         if wave_defense_table.wave_interval < 1100 or threat_check then
             wave_defense_table.wave_interval = 1100
         end
@@ -1128,8 +1128,8 @@ function Public.boost_difficulty()
         WPT.set('bonus_xp_on_join', 500)
         WD.set('next_wave', game.tick + 3600 * 15)
         WPT.set('spidertron_unlocked_at_zone', 10)
-        WD.set_normal_unit_current_health(1.2)
-        WD.set_normal_unit_current_per_wave(0.5)
+        WD.set_normal_unit_current_health(1.0)
+        WD.set_normal_unit_current_per_wave(0.3)
         WD.set_boss_unit_current_health(2)
         WD.set_boss_unit_current_per_wave(3)
         WPT.set('difficulty_set', true)
@@ -1146,7 +1146,7 @@ function Public.boost_difficulty()
         WD.set('next_wave', game.tick + 3600 * 8)
         WPT.set('spidertron_unlocked_at_zone', 8)
         WD.set_normal_unit_current_health(1.6)
-        WD.set_normal_unit_current_per_wave(0.8)
+        WD.set_normal_unit_current_per_wave(0.5)
         WD.set_boss_unit_current_health(3)
         WD.set_boss_unit_current_per_wave(5)
         WPT.set('difficulty_set', true)
diff --git a/maps/mountain_fortress_v3/ic/minimap.lua b/maps/mountain_fortress_v3/ic/minimap.lua
index 5ec1167d..f8a8dfdf 100644
--- a/maps/mountain_fortress_v3/ic/minimap.lua
+++ b/maps/mountain_fortress_v3/ic/minimap.lua
@@ -4,6 +4,8 @@ local ICT = require 'maps.mountain_fortress_v3.ic.table'
 local Functions = require 'maps.mountain_fortress_v3.ic.functions'
 local Gui = require 'maps.mountain_fortress_v3.ic.gui'
 
+local round = math.round
+
 local function validate_player(player)
     if not player then
         return false
@@ -142,7 +144,7 @@ local function draw_minimap(player, surface, position)
                 name = 'minimap_frame',
                 position = position,
                 surface_index = surface.index,
-                zoom = player_data.zoom,
+                zoom = round(player_data.zoom),
                 tooltip = 'LMB: Increase zoom level.\nRMB: Decrease zoom level.\nMMB: Toggle camera size.'
             }
         )
@@ -197,7 +199,7 @@ function Public.toggle_minimap(event)
         if player_data.zoom < 0.07 then
             player_data.zoom = 0.07
         end
-        element.zoom = player_data.zoom
+        element.zoom = round(player_data.zoom)
         return
     end
     if event.button == defines.mouse_button_type.left then
@@ -205,7 +207,7 @@ function Public.toggle_minimap(event)
         if player_data.zoom > 2 then
             player_data.zoom = 2
         end
-        element.zoom = player_data.zoom
+        element.zoom = round(player_data.zoom)
         return
     end
     if event.button == defines.mouse_button_type.middle then
diff --git a/maps/mountain_fortress_v3/terrain.lua b/maps/mountain_fortress_v3/terrain.lua
index 8c6721a4..48a78095 100644
--- a/maps/mountain_fortress_v3/terrain.lua
+++ b/maps/mountain_fortress_v3/terrain.lua
@@ -16,10 +16,10 @@ Public.level_width = WPT.level_width
 local worm_level_modifier = 0.19
 
 local start_ground_tiles = {
-    'hazard-concrete-left',
-    'hazard-concrete-right',
-    'brown-refined-concrete',
-    'concrete'
+    'dirt-1',
+    'grass-1',
+    'grass-2',
+    'dirt-2'
 }
 
 local wagon_raffle = {
@@ -315,39 +315,54 @@ local function wall(p, data)
                         if not alert_zone_1 then
                             local x_min = -WPT.level_width / 2
                             local x_max = WPT.level_width / 2
-                            surface.create_entity({name = 'electric-beam', position = {x_min, p.y}, source = {x_min, p.y}, target = {x_max, p.y}})
-                            surface.create_entity({name = 'electric-beam', position = {x_min, p.y}, source = {x_min, p.y}, target = {x_max, p.y}})
+                            WPT.set(
+                                'zone1_beam1',
+                                surface.create_entity({name = 'electric-beam', position = {x_min, p.y}, source = {x_min, p.y}, target = {x_max, p.y}})
+                            )
+                            WPT.set(
+                                'zone1_beam2',
+                                surface.create_entity({name = 'electric-beam', position = {x_min, p.y}, source = {x_min, p.y}, target = {x_max, p.y}})
+                            )
                             WPT.set('alert_zone_1', true)
-                            rendering.draw_text {
-                                text = 'Breaching the far side wall will start collapse.',
-                                surface = surface,
-                                target = {0, p.y + 35},
-                                color = {r = 0.98, g = 0.66, b = 0.22},
-                                scale = 8,
-                                font = 'heading-1',
-                                alignment = 'center',
-                                scale_with_zoom = false
-                            }
-                            rendering.draw_text {
-                                text = 'Breaching the far side wall will start collapse',
-                                surface = surface,
-                                target = {-180, p.y + 35},
-                                color = {r = 0.98, g = 0.66, b = 0.22},
-                                scale = 8,
-                                font = 'heading-1',
-                                alignment = 'center',
-                                scale_with_zoom = false
-                            }
-                            rendering.draw_text {
-                                text = 'Breaching the far side wall will start collapse',
-                                surface = surface,
-                                target = {180, p.y + 35},
-                                color = {r = 0.98, g = 0.66, b = 0.22},
-                                scale = 8,
-                                font = 'heading-1',
-                                alignment = 'center',
-                                scale_with_zoom = false
-                            }
+                            WPT.set(
+                                'zone1_text1',
+                                rendering.draw_text {
+                                    text = 'Breaching the far side wall will start collapse.',
+                                    surface = surface,
+                                    target = {0, p.y + 35},
+                                    color = {r = 0.98, g = 0.66, b = 0.22},
+                                    scale = 8,
+                                    font = 'heading-1',
+                                    alignment = 'center',
+                                    scale_with_zoom = false
+                                }
+                            )
+                            WPT.set(
+                                'zone1_text2',
+                                rendering.draw_text {
+                                    text = 'Breaching the far side wall will start collapse',
+                                    surface = surface,
+                                    target = {-180, p.y + 35},
+                                    color = {r = 0.98, g = 0.66, b = 0.22},
+                                    scale = 8,
+                                    font = 'heading-1',
+                                    alignment = 'center',
+                                    scale_with_zoom = false
+                                }
+                            )
+                            WPT.set(
+                                'zone1_text3',
+                                rendering.draw_text {
+                                    text = 'Breaching the far side wall will start collapse',
+                                    surface = surface,
+                                    target = {180, p.y + 35},
+                                    color = {r = 0.98, g = 0.66, b = 0.22},
+                                    scale = 8,
+                                    font = 'heading-1',
+                                    alignment = 'center',
+                                    scale_with_zoom = false
+                                }
+                            )
                         end
                     end
                 else
@@ -2407,7 +2422,7 @@ local function border_chunk(p, data)
         entities[#entities + 1] = {name = trees[random(1, #trees)], position = pos}
     end
 
-    local noise = get_perlin('dungeons', pos, 14882)
+    local noise = get_perlin('dungeons', pos, data.seed)
     local index = floor(noise * 32) % 4 + 1
     tiles[#tiles + 1] = {name = start_ground_tiles[index], position = pos}
 
diff --git a/modules/burden.lua b/modules/burden.lua
index 60dd38a0..cd014ce9 100644
--- a/modules/burden.lua
+++ b/modules/burden.lua
@@ -57,9 +57,4 @@ local function on_init()
     script.on_event(defines.events.on_player_main_inventory_changed, check_burden)
 end
 
-local function on_load()
-    script.on_event(defines.events.on_player_main_inventory_changed, check_burden)
-end
-
 Event.on_init(on_init)
-Event.on_load(on_load)
diff --git a/modules/rpg/functions.lua b/modules/rpg/functions.lua
index fd96c511..143d07da 100644
--- a/modules/rpg/functions.lua
+++ b/modules/rpg/functions.lua
@@ -167,7 +167,7 @@ local function add_to_global_pool(amount, personal_tax)
         fee = amount * 0.3
     end
 
-    rpg_extra.global_pool = rpg_extra.global_pool + fee
+    rpg_extra.global_pool = round(rpg_extra.global_pool + fee, 8)
     return amount - fee
 end
 
@@ -718,7 +718,7 @@ function Public.rpg_reset_player(player, one_time_reset)
             }
         )
         rpg_t.points_left = old_points_left + total
-        rpg_t.xp = old_xp
+        rpg_t.xp = round(old_xp)
         rpg_t.level = old_level
     else
         Public.set_new_player_tbl(
@@ -817,7 +817,7 @@ function Public.gain_xp(player, amount, added_to_pool, text)
     end
 
     rpg_t.xp = round(rpg_t.xp + amount, 3)
-    rpg_t.xp_since_last_floaty_text = rpg_t.xp_since_last_floaty_text + amount
+    rpg_t.xp_since_last_floaty_text = round(rpg_t.xp_since_last_floaty_text + amount)
 
     if not experience_levels[rpg_t.level + 1] then
         return
diff --git a/modules/rpg/main.lua b/modules/rpg/main.lua
index 4958a7ab..c4047660 100644
--- a/modules/rpg/main.lua
+++ b/modules/rpg/main.lua
@@ -24,6 +24,7 @@ local sub = string.sub
 local round = math.round
 local floor = math.floor
 local random = math.random
+local sqrt = math.sqrt
 local abs = math.abs
 
 local function log_one_punch(callback)
@@ -749,7 +750,7 @@ local function on_entity_damaged(event)
             {
                 name = 'flying-text',
                 position = entity.position,
-                text = '‼' .. math.floor(damage),
+                text = '‼' .. floor(damage),
                 color = {255, 0, 0}
             }
         )
@@ -758,7 +759,7 @@ local function on_entity_damaged(event)
         damage = damage * random(100, 125) * 0.01
         cause.player.create_local_flying_text(
             {
-                text = math.floor(damage),
+                text = floor(damage),
                 position = entity.position,
                 color = {150, 150, 150},
                 time_to_live = 90,
@@ -923,26 +924,28 @@ local function on_pre_player_mined_item(event)
     end
 
     local rpg_t = Public.get_value_from_player(player.index)
-    if rpg_t.last_mined_entity_position.x == event.entity.position.x and rpg_t.last_mined_entity_position.y == event.entity.position.y then
+    if rpg_t.last_mined_entity_position.x == entity.position.x and rpg_t.last_mined_entity_position.y == entity.position.y then
         return
     end
     rpg_t.last_mined_entity_position.x = entity.position.x
     rpg_t.last_mined_entity_position.y = entity.position.y
 
-    local distance_multiplier = math.floor(math.sqrt(entity.position.x ^ 2 + entity.position.y ^ 2)) * 0.0005 + 1
+    local distance_multiplier = floor(sqrt(entity.position.x ^ 2 + entity.position.y ^ 2)) * 0.0005 + 1
+
+    local xp_modifier_when_mining = Public.get('rpg_extra').xp_modifier_when_mining
 
     local xp_amount
     if entity.type == 'resource' then
-        xp_amount = 0.5 * distance_multiplier
+        xp_amount = 0.9 * distance_multiplier
     else
-        xp_amount = (1.5 + event.entity.prototype.max_health * 0.0035) * distance_multiplier
+        xp_amount = (1.5 + entity.prototype.max_health * xp_modifier_when_mining) * distance_multiplier
     end
 
     if player.gui.screen[main_frame_name] then
         local f = player.gui.screen[main_frame_name]
         local data = Gui.get_data(f)
         if data.exp_gui and data.exp_gui.valid then
-            data.exp_gui.caption = math.floor(rpg_t.xp)
+            data.exp_gui.caption = floor(rpg_t.xp)
         end
     end
 
@@ -969,7 +972,8 @@ local function on_player_crafted_item(event)
 
     local item = event.item_stack
 
-    local amount = 0.30 * random(1, 2)
+    local amount = 0.40 * random(1, 2)
+    local recipe = event.recipe
 
     if tweaked_crafting_items_enabled then
         if item and item.valid then
@@ -979,7 +983,9 @@ local function on_player_crafted_item(event)
         end
     end
 
-    Public.gain_xp(player, event.recipe.energy * amount)
+    local final_xp = recipe.energy * amount
+
+    Public.gain_xp(player, final_xp)
     Public.reward_mana(player, amount)
 end
 
@@ -1067,7 +1073,11 @@ local function damage_entity(e)
         return
     end
 
-    e.surface.create_entity({name = 'water-splash', position = e.position})
+    if not e.destructible then
+        return
+    end
+
+    e.surface.create_entity({name = 'ground-explosion', position = e.position})
 
     if e.type == 'entity-ghost' then
         e.destroy()
@@ -1203,8 +1213,7 @@ local function on_player_used_capsule(event)
         target_pos = {position.x, position.y}
     elseif projectile_types[object.entityName] then
         local coord_modifier = get_near_coord_modifier(projectile_types[object.entityName].max_range)
-        local proj_pos = {position.x + coord_modifier.x, position.y + coord_modifier.y}
-        target_pos = proj_pos
+        target_pos = {position.x + coord_modifier.x, position.y + coord_modifier.y}
     end
 
     local range
@@ -1273,7 +1282,7 @@ local function on_player_used_capsule(event)
                 left_top = {x = position.x - 2, y = position.y - 2},
                 right_bottom = {x = position.x + 2, y = position.y + 2}
             }
-            create_projectile(surface, object.entityName, position, force, target_pos, range)
+            create_projectile(surface, projectile_types[object.entityName].name, position, force, target_pos, range)
             if object.damage then
                 for _, e in pairs(surface.find_entities_filtered({area = damage_area})) do
                     damage_entity(e)
diff --git a/modules/rpg/spells.lua b/modules/rpg/spells.lua
index 94381aaf..c2904999 100644
--- a/modules/rpg/spells.lua
+++ b/modules/rpg/spells.lua
@@ -6,7 +6,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.stone-wall'},
         entityName = 'stone-wall',
-        level = 10,
+        level = 1,
         type = 'item',
         mana_cost = 60,
         tick = 100,
@@ -17,7 +17,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.wooden-chest'},
         entityName = 'wooden-chest',
-        level = 2,
+        level = 1,
         type = 'item',
         mana_cost = 50,
         tick = 100,
@@ -39,7 +39,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.steel-chest'},
         entityName = 'steel-chest',
-        level = 15,
+        level = 30,
         type = 'item',
         mana_cost = 150,
         tick = 300,
@@ -50,7 +50,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.transport-belt'},
         entityName = 'transport-belt',
-        level = 3,
+        level = 1,
         type = 'item',
         mana_cost = 80,
         tick = 100,
@@ -61,7 +61,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.fast-transport-belt'},
         entityName = 'fast-transport-belt',
-        level = 20,
+        level = 10,
         type = 'item',
         mana_cost = 110,
         tick = 200,
@@ -72,7 +72,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.express-transport-belt'},
         entityName = 'express-transport-belt',
-        level = 60,
+        level = 30,
         type = 'item',
         mana_cost = 150,
         tick = 300,
@@ -83,7 +83,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.underground-belt'},
         entityName = 'underground-belt',
-        level = 3,
+        level = 1,
         type = 'item',
         mana_cost = 80,
         tick = 100,
@@ -94,7 +94,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.fast-underground-belt'},
         entityName = 'fast-underground-belt',
-        level = 20,
+        level = 10,
         type = 'item',
         mana_cost = 110,
         tick = 200,
@@ -105,7 +105,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.express-underground-belt'},
         entityName = 'express-underground-belt',
-        level = 60,
+        level = 30,
         type = 'item',
         mana_cost = 150,
         tick = 300,
@@ -138,7 +138,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.tree'},
         entityName = 'tree-05',
-        level = 70,
+        level = 30,
         type = 'entity',
         mana_cost = 100,
         tick = 350,
@@ -149,7 +149,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.sand-rock-big'},
         entityName = 'sand-rock-big',
-        level = 80,
+        level = 60,
         type = 'entity',
         mana_cost = 80,
         tick = 350,
@@ -160,7 +160,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.small-biter'},
         entityName = 'small-biter',
-        level = 50,
+        level = 30,
         biter = true,
         type = 'entity',
         mana_cost = 55,
@@ -171,7 +171,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.small-spitter'},
         entityName = 'small-spitter',
-        level = 50,
+        level = 30,
         biter = true,
         type = 'entity',
         mana_cost = 55,
@@ -182,7 +182,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.medium-biter'},
         entityName = 'medium-biter',
-        level = 70,
+        level = 60,
         biter = true,
         type = 'entity',
         mana_cost = 100,
@@ -193,7 +193,7 @@ function Public.conjure_items()
     spells[#spells + 1] = {
         name = {'entity-name.medium-spitter'},
         entityName = 'medium-spitter',
-        level = 70,
+        level = 60,
         biter = true,
         type = 'entity',
         mana_cost = 100,
@@ -223,6 +223,21 @@ function Public.conjure_items()
         enabled = false,
         sprite = 'entity/spitter-spawner'
     }
+
+    spells[#spells + 1] = {
+        name = {'item-name.shotgun-shell'},
+        entityName = 'shotgun-shell',
+        target = true,
+        amount = 1,
+        damage = true,
+        force = 'player',
+        level = 10,
+        type = 'item',
+        mana_cost = 40,
+        tick = 150,
+        enabled = true,
+        sprite = 'recipe/shotgun-shell'
+    }
     spells[#spells + 1] = {
         name = {'item-name.grenade'},
         entityName = 'grenade',
@@ -231,8 +246,8 @@ function Public.conjure_items()
         damage = true,
         force = 'player',
         level = 30,
-        type = 'special',
-        mana_cost = 150,
+        type = 'item',
+        mana_cost = 100,
         tick = 150,
         enabled = true,
         sprite = 'recipe/grenade'
@@ -245,12 +260,54 @@ function Public.conjure_items()
         damage = true,
         force = 'player',
         level = 50,
-        type = 'special',
-        mana_cost = 250,
+        type = 'item',
+        mana_cost = 225,
         tick = 200,
         enabled = true,
         sprite = 'recipe/cluster-grenade'
     }
+    spells[#spells + 1] = {
+        name = {'item-name.cannon-shell'},
+        entityName = 'cannon-shell',
+        target = true,
+        amount = 1,
+        damage = true,
+        force = 'player',
+        level = 30,
+        type = 'item',
+        mana_cost = 125,
+        tick = 150,
+        enabled = true,
+        sprite = 'recipe/cannon-shell'
+    }
+    spells[#spells + 1] = {
+        name = {'item-name.explosive-cannon-shell'},
+        entityName = 'explosive-cannon-shell',
+        target = true,
+        amount = 2,
+        damage = true,
+        force = 'player',
+        level = 50,
+        type = 'item',
+        mana_cost = 250,
+        tick = 200,
+        enabled = true,
+        sprite = 'recipe/explosive-cannon-shell'
+    }
+    spells[#spells + 1] = {
+        name = {'item-name.uranium-cannon-shell'},
+        entityName = 'uranium-cannon-shell',
+        target = true,
+        amount = 2,
+        damage = true,
+        force = 'player',
+        level = 70,
+        type = 'item',
+        mana_cost = 400,
+        tick = 200,
+        enabled = true,
+        sprite = 'recipe/uranium-cannon-shell'
+    }
     spells[#spells + 1] = {
         name = {'item-name.rocket'},
         entityName = 'rocket',
@@ -260,7 +317,7 @@ function Public.conjure_items()
         damage = true,
         force = 'enemy',
         level = 40,
-        type = 'special',
+        type = 'item',
         mana_cost = 60,
         tick = 320,
         enabled = true,
@@ -289,9 +346,9 @@ function Public.conjure_items()
         range = 50,
         damage = false,
         force = 'player',
-        level = 50,
+        level = 45,
         type = 'special',
-        mana_cost = 200,
+        mana_cost = 150,
         tick = 100,
         enabled = true,
         sprite = 'recipe/repair-pack'
@@ -304,9 +361,9 @@ function Public.conjure_items()
         range = 0,
         damage = true,
         force = 'player',
-        level = 70,
+        level = 50,
         type = 'special',
-        mana_cost = 90,
+        mana_cost = 70,
         tick = 100,
         enabled = true,
         sprite = 'virtual-signal/signal-S'
@@ -357,7 +414,7 @@ function Public.conjure_items()
         name = {'spells.dynamites'},
         entityName = 'explosives',
         target = false,
-        amount = 2,
+        amount = 3,
         capsule = true,
         damage = false,
         range = 30,
@@ -379,7 +436,7 @@ function Public.conjure_items()
         force = 'player',
         level = 60,
         type = 'special',
-        mana_cost = 250,
+        mana_cost = 150,
         tick = 320,
         enabled = true,
         sprite = 'entity/compilatron'
@@ -394,7 +451,7 @@ function Public.conjure_items()
         force = 'player',
         level = 50,
         type = 'special',
-        mana_cost = 340,
+        mana_cost = 220,
         tick = 320,
         enabled = true,
         sprite = 'recipe/distractor-capsule'
diff --git a/modules/rpg/table.lua b/modules/rpg/table.lua
index 6af940ef..e4418485 100644
--- a/modules/rpg/table.lua
+++ b/modules/rpg/table.lua
@@ -108,6 +108,7 @@ function Public.reset_table()
     this.rpg_extra.enable_explosive_bullets = false
     this.rpg_extra.enable_explosive_bullets_globally = false
     this.rpg_extra.mana_per_tick = 0.1
+    this.rpg_extra.xp_modifier_when_mining = 0.0045
     this.rpg_extra.force_mana_per_tick = false
     this.rpg_extra.enable_stone_path = false
     this.rpg_extra.enable_auto_allocate = false
diff --git a/modules/wave_defense/gui.lua b/modules/wave_defense/gui.lua
index fa1e2d0e..73e26b70 100644
--- a/modules/wave_defense/gui.lua
+++ b/modules/wave_defense/gui.lua
@@ -1,6 +1,8 @@
 local Public = require 'modules.wave_defense.table'
 local BiterHealthBooster = require 'modules.biter_health_booster_v2'
 
+local floor = math.floor
+
 local function create_gui(player)
     local frame = player.gui.top.add({type = 'frame', name = 'wave_defense'})
     frame.style.maximal_height = 37
@@ -59,7 +61,7 @@ local function get_threat_gain()
     if past_index < 1 then
         past_index = 1
     end
-    local gain = math.floor((threat_log[threat_log_index] - threat_log[past_index]) / 15)
+    local gain = floor((threat_log[threat_log_index] - threat_log[past_index]) / 15)
     return gain
 end
 
@@ -85,14 +87,14 @@ function Public.update_gui(player)
     gui.wave_number.caption = wave_number
     if wave_number == 0 then
         gui.label.caption = {'wave_defense.gui_1'}
-        gui.wave_number.caption = math.floor((next_wave - game.tick) / 60) + 1
+        gui.wave_number.caption = floor((next_wave - game.tick) / 60) + 1
     end
     local interval = next_wave - last_wave
     gui.progressbar.value = 1 - (next_wave - game.tick) / interval
 
     gui.threat.caption = {'wave_defense.gui_3'}
     gui.threat.tooltip = {'wave_defense.tooltip_1', biter_health_boost * 100, max_active_biters}
-    gui.threat_value.caption = math.floor(threat)
+    gui.threat_value.caption = floor(threat)
     gui.threat_value.tooltip = {
         'wave_defense.tooltip_1',
         biter_health_boost * 100,
@@ -109,14 +111,14 @@ function Public.update_gui(player)
 
         if gain >= 0 then
             gui.threat_gains.caption = ' (+' .. gain .. ')'
-            local g = 255 - math.floor(gain / d)
+            local g = 255 - floor(gain / d)
             if g < 0 then
                 g = 0
             end
             gui.threat_gains.style.font_color = {255, g, 0}
         else
             gui.threat_gains.caption = ' (' .. gain .. ')'
-            local r = 255 - math.floor(math.abs(gain) / d)
+            local r = 255 - floor(math.abs(gain) / d)
             if r < 0 then
                 r = 0
             end
diff --git a/modules/wave_defense/main.lua b/modules/wave_defense/main.lua
index d83bb018..38c18df4 100644
--- a/modules/wave_defense/main.lua
+++ b/modules/wave_defense/main.lua
@@ -517,12 +517,9 @@ local function spawn_biter(surface, position, forceSpawn, is_boss_biter)
 
     local old_position = position
 
-    position = surface.find_non_colliding_position('steel-chest', position, 2, 1)
+    position = surface.find_non_colliding_position('steel-chest', position, 3, 1)
     if not position then
-        position = surface.find_non_colliding_position('steel-chest', old_position, 4, 1)
-        if not position then
-            position = old_position
-        end
+        position = old_position
     end
 
     local biter = surface.create_entity({name = name, position = position, force = 'enemy'})
diff --git a/modules/wave_defense/table.lua b/modules/wave_defense/table.lua
index f9460c2a..e92805de 100644
--- a/modules/wave_defense/table.lua
+++ b/modules/wave_defense/table.lua
@@ -32,7 +32,7 @@ function Public.reset_wave_defense()
     this.max_biter_age = 3600 * 60
     this.nests = {}
     this.nest_building_density = 48
-    this.next_wave = game.tick + 3600 * 15
+    this.next_wave = game.tick + 3600 * 20
     this.enable_grace_time = {
         enabled = true,
         set = nil
diff --git a/player_modifiers.lua b/player_modifiers.lua
index dd461446..1091dd44 100644
--- a/player_modifiers.lua
+++ b/player_modifiers.lua
@@ -4,6 +4,8 @@
 local Event = require 'utils.event'
 local Global = require 'utils.global'
 
+local round = math.round
+
 local this = {
     modifiers = {},
     disabled_modifier = {}
@@ -72,7 +74,7 @@ function Public.update_player_modifiers(player)
             if disabled_modifiers and disabled_modifiers[k] then
                 player[modifier] = 0
             else
-                player[modifier] = sum_value
+                player[modifier] = round(sum_value, 8)
             end
         end
     end