diff --git a/BaseClasses.py b/BaseClasses.py
index 73c24cd8..f037c844 100644
--- a/BaseClasses.py
+++ b/BaseClasses.py
@@ -160,7 +160,7 @@ class MultiWorld():
         self.worlds = {}
         self.slot_seeds = {}
 
-    def get_all_ids(self):
+    def get_all_ids(self) -> Tuple[int, ...]:
         return self.player_ids + tuple(self.groups)
 
     def add_group(self, name: str, game: str, players: Set[int] = frozenset()) -> Tuple[int, Group]:
@@ -285,11 +285,11 @@ class MultiWorld():
         self.is_race = True
 
     @functools.cached_property
-    def player_ids(self):
+    def player_ids(self) -> Tuple[int, ...]:
         return tuple(range(1, self.players + 1))
 
     @functools.lru_cache()
-    def get_game_players(self, game_name: str):
+    def get_game_players(self, game_name: str) -> Tuple[int, ...]:
         return tuple(player for player in self.player_ids if self.game[player] == game_name)
 
     @functools.lru_cache()
@@ -424,46 +424,35 @@ class MultiWorld():
         state.can_reach(Region) in the Entrance's traversal condition, as opposed to pure transition logic."""
         self.indirect_connections.setdefault(region, set()).add(entrance)
 
-    def get_locations(self) -> List[Location]:
+    def get_locations(self, player: Optional[int] = None) -> List[Location]:
         if self._cached_locations is None:
             self._cached_locations = [location for region in self.regions for location in region.locations]
+        if player is not None:
+            return [location for location in self._cached_locations if location.player == player]
         return self._cached_locations
 
     def clear_location_cache(self):
         self._cached_locations = None
 
     def get_unfilled_locations(self, player: Optional[int] = None) -> List[Location]:
-        if player is not None:
-            return [location for location in self.get_locations() if
-                    location.player == player and not location.item]
-        return [location for location in self.get_locations() if not location.item]
-
-    def get_unfilled_dungeon_locations(self):
-        return [location for location in self.get_locations() if not location.item and location.parent_region.dungeon]
+        return [location for location in self.get_locations(player) if location.item is None]
 
     def get_filled_locations(self, player: Optional[int] = None) -> List[Location]:
-        if player is not None:
-            return [location for location in self.get_locations() if
-                    location.player == player and location.item is not None]
-        return [location for location in self.get_locations() if location.item is not None]
+        return [location for location in self.get_locations(player) if location.item is not None]
 
     def get_reachable_locations(self, state: Optional[CollectionState] = None, player: Optional[int] = None) -> List[Location]:
-        if state is None:
-            state = self.state
-        return [location for location in self.get_locations() if
-                (player is None or location.player == player) and location.can_reach(state)]
+        state: CollectionState = state if state else self.state
+        return [location for location in self.get_locations(player) if location.can_reach(state)]
 
     def get_placeable_locations(self, state=None, player=None) -> List[Location]:
-        if state is None:
-            state = self.state
-        return [location for location in self.get_locations() if
-                (player is None or location.player == player) and location.item is None and location.can_reach(state)]
+        state: CollectionState = state if state else self.state
+        return [location for location in self.get_locations(player) if location.item is None and location.can_reach(state)]
 
-    def get_unfilled_locations_for_players(self, locations: List[str], players: Iterable[int]):
+    def get_unfilled_locations_for_players(self, location_names: List[str], players: Iterable[int]):
         for player in players:
-            if len(locations) == 0:
-                locations = [location.name for location in self.get_unfilled_locations(player)]
-            for location_name in locations:
+            if not location_names:
+                location_names = [location.name for location in self.get_unfilled_locations(player)]
+            for location_name in location_names:
                 location = self._location_cache.get((location_name, player), None)
                 if location is not None and location.item is None:
                     yield location
diff --git a/worlds/alttp/Dungeons.py b/worlds/alttp/Dungeons.py
index 866eb3e0..a37ded8d 100644
--- a/worlds/alttp/Dungeons.py
+++ b/worlds/alttp/Dungeons.py
@@ -118,6 +118,10 @@ def get_dungeon_item_pool_player(world, player) -> typing.List:
     return [item for dungeon in world.dungeons.values() if dungeon.player == player for item in dungeon.all_items]
 
 
+def get_unfilled_dungeon_locations(multiworld) -> typing.List:
+    return [location for location in multiworld.get_locations() if not location.item and location.parent_region.dungeon]
+
+
 def fill_dungeons_restrictive(world):
     """Places dungeon-native items into their dungeons, places nothing if everything is shuffled outside."""
     localized: set = set()
@@ -134,7 +138,7 @@ def fill_dungeons_restrictive(world):
         if in_dungeon_items:
             restricted_players = {player for player, restricted in world.restrict_dungeon_item_on_boss.items() if
                                   restricted}
-            locations = [location for location in world.get_unfilled_dungeon_locations()
+            locations = [location for location in get_unfilled_dungeon_locations(world)
                          # filter boss
                          if not (location.player in restricted_players and location.name in lookup_boss_drops)]
             if dungeon_specific: