Three things, though I think they're likely easy to fix
1. Interacting with the Lantern event in Mika's dungeon causes the event's sprite to turn into what seems to be a manhole cover, before it gets picked up
2. Part of the counter (in the room where "Mole" is) is a tile that Anne can walk on. It's the one with the two coloured bottles on it.
3. As a player fascinated with flavour text (hint hint), I have found a game-over that is accessible while playing as Anne, but is also accessible while playing as Nala if you don't immediately go to the basement. In this scene, Anne appears, no matter who you are playing as. Unsure if this is intentional or not due to the fourth wall break, but just wanted to point it out in case its not intentional.