diff --git a/maps/biter_hatchery/main.lua b/maps/biter_hatchery/main.lua
index 5732c1e4..1578b50f 100644
--- a/maps/biter_hatchery/main.lua
+++ b/maps/biter_hatchery/main.lua
@@ -1,12 +1,12 @@
 --luacheck: ignore
 require 'modules.no_turrets'
 require 'modules.no_acid_puddles'
-local Gui = require 'utils.gui'
+local CoreGui = require 'utils.gui'
+require 'maps.biter_hatchery.share_chat'
 local Map_score = require 'utils.gui.map_score'
 local unit_raffle = require 'maps.biter_hatchery.raffle_tables'
 local Terrain = require 'maps.biter_hatchery.terrain'
 local Gui = require 'maps.biter_hatchery.gui'
-require 'maps.biter_hatchery.share_chat'
 local Team = require 'maps.biter_hatchery.team'
 local Unit_health_booster = require 'modules.biter_health_booster'
 local Map = require 'modules.map_info'
@@ -95,7 +95,7 @@ local function spawn_units(belt, food_item, removed_item_count)
         end
     end
     if math_random(1, 8) == 1 then
-        spawn_worm_turret(belt.surface, belt.force.name, food_item)
+        spawn_worm_turret(belt.surface, belt.force.name)
     end
 end
 
@@ -117,7 +117,7 @@ local function feed_floaty_text(entity)
     entity.surface.create_entity({name = 'flying-text', position = entity.position, text = nom_msg[math_random(1, 4)], color = {math_random(50, 100), 0, 255}})
     local position = {x = entity.position.x - 0.75, y = entity.position.y - 1}
     local b = 1.35
-    for a = 1, math_random(0, 2), 1 do
+    for _ = 1, math_random(0, 2), 1 do
         local p = {(position.x + 0.4) + (b * -1 + math_random(0, b * 20) * 0.1), position.y + (b * -1 + math_random(0, b * 20) * 0.1)}
         entity.surface.create_entity({name = 'flying-text', position = p, text = '♥', color = {math_random(150, 255), 0, 255}})
     end
@@ -126,7 +126,7 @@ end
 local function eat_food_from_belt(belt)
     for i = 1, 2, 1 do
         local line = belt.get_transport_line(i)
-        for food_item, raffle in pairs(unit_raffle) do
+        for food_item, _ in pairs(unit_raffle) do
             if global.map_forces[belt.force.name].unit_count > global.map_forces[belt.force.name].max_unit_count then
                 return
             end
@@ -140,8 +140,7 @@ local function eat_food_from_belt(belt)
 end
 
 local function nom()
-    local surface = game.surfaces.nauvis
-    for key, force in pairs(global.map_forces) do
+    for _, force in pairs(global.map_forces) do
         if not force.hatchery then
             return
         end
@@ -310,7 +309,7 @@ local function on_entity_died(event)
         for _, child in pairs(player.gui.left.children) do
             child.destroy()
         end
-        Gui.call_existing_tab(player, 'Map Scores')
+        CoreGui.call_existing_tab(player, 'Map Scores')
     end
 
     for _, e in pairs(entity.surface.find_entities_filtered({type = 'unit'})) do
@@ -320,7 +319,6 @@ end
 
 local function on_player_joined_game(event)
     local player = game.players[event.player_index]
-    local surface = game.surfaces.nauvis
 
     Gui.unit_health_buttons(player)
     Gui.spectate_button(player)
diff --git a/maps/biter_hatchery/team.lua b/maps/biter_hatchery/team.lua
index 70c616e4..6754ad8a 100644
--- a/maps/biter_hatchery/team.lua
+++ b/maps/biter_hatchery/team.lua
@@ -119,8 +119,7 @@ function Public.spawn_players(hatchery)
     if game.tick % 90 ~= 0 then
         return
     end
-    game.print('spawning characters', {150, 150, 150})
-    local surface = game.surfaces.nauvis
+    -- game.print('spawning characters', {150, 150, 150})
     for _, player in pairs(game.connected_players) do
         if player.force.name ~= 'spectator' then
             Public.assign_force_to_player(player)
diff --git a/maps/biter_hatchery/terrain.lua b/maps/biter_hatchery/terrain.lua
index 74213ffd..a3875bab 100644
--- a/maps/biter_hatchery/terrain.lua
+++ b/maps/biter_hatchery/terrain.lua
@@ -10,7 +10,7 @@ local function get_replacement_tile(surface, position)
     for i = 1, 128, 1 do
         local vectors = {{0, i}, {0, i * -1}, {i, 0}, {i * -1, 0}}
         table.shuffle_table(vectors)
-        for k, v in pairs(vectors) do
+        for _, v in pairs(vectors) do
             local tile = surface.get_tile(position.x + v[1], position.y + v[2])
             if not tile.collides_with('resource-layer') then
                 return tile.name
@@ -58,6 +58,7 @@ end
 function Public.reset_nauvis(hatchery)
     local surface = game.surfaces.nauvis
     local mgs = surface.map_gen_settings
+    ---@diagnostic disable-next-line: assign-type-mismatch
     mgs.seed = math_random(1, 99999999)
     mgs.water = 1
     mgs.starting_area = 1
@@ -70,6 +71,7 @@ function Public.reset_nauvis(hatchery)
         ['iron-ore'] = {frequency = 8, size = 0.7, richness = 1},
         ['uranium-ore'] = {frequency = 5, size = 0.5, richness = 0.5},
         ['crude-oil'] = {frequency = 5, size = 1, richness = 1},
+        ---@diagnostic disable-next-line: assign-type-mismatch
         ['trees'] = {frequency = math.random(4, 32) * 0.1, size = math.random(4, 16) * 0.1, richness = math.random(1, 10) * 0.1},
         ['enemy-base'] = {frequency = 0, size = 0, richness = 0}
     }
@@ -79,7 +81,7 @@ function Public.reset_nauvis(hatchery)
         surface.delete_chunk({chunk.x, chunk.y})
     end
     hatchery.gamestate = 'prepare_east'
-    game.print('preparing east', {150, 150, 150})
+    -- game.print('preparing east', {150, 150, 150})
     print(hatchery.gamestate)
 end
 
@@ -109,7 +111,7 @@ function Public.prepare_east(hatchery)
     end
     draw_spawn_ore(surface, {x = 240, y = 0})
     hatchery.gamestate = 'clear_west'
-    game.print('clearing west chunks', {150, 150, 150})
+    -- game.print('clearing west chunks', {150, 150, 150})
     print(hatchery.gamestate)
 end
 
@@ -125,7 +127,7 @@ function Public.clear_west(hatchery)
     end
     hatchery.mirror_queue = {}
     hatchery.gamestate = 'prepare_west'
-    game.print('preparing west chunks', {150, 150, 150})
+    -- game.print('preparing west chunks', {150, 150, 150})
     print(hatchery.gamestate)
 end
 
@@ -147,11 +149,14 @@ function Public.draw_team_nests(hatchery)
     if game.tick % 90 ~= 0 then
         return
     end
-    game.print('placing nests', {150, 150, 150})
+    -- game.print('placing nests', {150, 150, 150})
     local surface = game.surfaces.nauvis
     local x = hatchery_position.x
 
     local e = surface.create_entity({name = 'biter-spawner', position = {x * -1, 0}, force = 'west'})
+    if not e or not e.valid then
+        return
+    end
     for _, p in pairs({{x * -1 + 6, 0}, {x * -1 + 3, 6}, {x * -1 + 3, -5}}) do
         surface.create_entity({name = 'small-worm-turret', position = p, force = 'west'})
         surface.create_decoratives {check_collision = false, decoratives = {{name = 'enemy-decal', position = p, amount = 1}}}
@@ -162,6 +167,9 @@ function Public.draw_team_nests(hatchery)
     surface.create_decoratives {check_collision = false, decoratives = {{name = 'enemy-decal', position = e.position, amount = 3}}}
 
     local e = surface.create_entity({name = 'biter-spawner', position = {x, 0}, force = 'east'})
+    if not e or not e.valid then
+        return
+    end
     for _, p in pairs({{x - 6, 0}, {x - 3, 6}, {x - 3, -5}}) do
         surface.create_entity({name = 'small-worm-turret', position = p, force = 'east'})
         surface.create_decoratives {check_collision = false, decoratives = {{name = 'enemy-decal', position = p, amount = 1}}}