diff --git a/worlds/noita/__init__.py b/worlds/noita/__init__.py
index b8f8e4ae..43078c5e 100644
--- a/worlds/noita/__init__.py
+++ b/worlds/noita/__init__.py
@@ -38,7 +38,7 @@ class NoitaWorld(World):
 
     web = NoitaWeb()
 
-    def generate_early(self):
+    def generate_early(self) -> None:
         if not self.multiworld.get_player_name(self.player).isascii():
             raise Exception("Noita yaml's slot name has invalid character(s).")
     
diff --git a/worlds/noita/locations.py b/worlds/noita/locations.py
index afe16c54..cf91ba44 100644
--- a/worlds/noita/locations.py
+++ b/worlds/noita/locations.py
@@ -12,7 +12,7 @@ class NoitaLocation(Location):
 class LocationData(NamedTuple):
     id: int
     flag: int = 0
-    ltype: Optional[str] = "shop"
+    ltype: str = "shop"
 
 
 class LocationFlag(IntEnum):
diff --git a/worlds/noita/regions.py b/worlds/noita/regions.py
index 6a9c8677..3b7fd396 100644
--- a/worlds/noita/regions.py
+++ b/worlds/noita/regions.py
@@ -41,7 +41,7 @@ def create_regions(world: "NoitaWorld") -> Dict[str, Region]:
 
 
 # An "Entrance" is really just a connection between two regions
-def create_entrance(player: int, source: str, destination: str, regions: Dict[str, Region]):
+def create_entrance(player: int, source: str, destination: str, regions: Dict[str, Region]) -> Entrance:
     entrance = Entrance(player, f"From {source} To {destination}", regions[source])
     entrance.connect(regions[destination])
     return entrance
diff --git a/worlds/noita/rules.py b/worlds/noita/rules.py
index 95039bee..65871a80 100644
--- a/worlds/noita/rules.py
+++ b/worlds/noita/rules.py
@@ -68,7 +68,7 @@ def has_orb_count(state: CollectionState, player: int, amount: int) -> bool:
     return state.count("Orb", player) >= amount
 
 
-def forbid_items_at_locations(world: "NoitaWorld", shop_locations: Set[str], forbidden_items: Set[str]):
+def forbid_items_at_locations(world: "NoitaWorld", shop_locations: Set[str], forbidden_items: Set[str]) -> None:
     for shop_location in shop_locations:
         location = world.multiworld.get_location(shop_location, world.player)
         GenericRules.forbid_items_for_player(location, forbidden_items, world.player)
@@ -129,7 +129,7 @@ def holy_mountain_unlock_conditions(world: "NoitaWorld") -> None:
             )
 
 
-def biome_unlock_conditions(world: "NoitaWorld"):
+def biome_unlock_conditions(world: "NoitaWorld") -> None:
     lukki_entrances = world.multiworld.get_region("Lukki Lair", world.player).entrances
     magical_entrances = world.multiworld.get_region("Magical Temple", world.player).entrances
     wizard_entrances = world.multiworld.get_region("Wizards' Den", world.player).entrances