Interesting little game. I like the concept and the art. It gave me some Resident Evil vibes, but as a 2D game. The music also added some nice ambiance.
That being said, the game is pretty rough around the edges. I ran into a load of bugs, the bat disappearing, enemies stuck on the floor, opening the pause menu causing the game to restart, etc..
The SFX could also use an overhaul, with many of them sounding odd - like the bat hitting something sounds like glass breaking.
Good luck with continuing the project!