I really like the art in this game! The upgrades each night are a nice touch.
I kept trying to shoot when my flashlight was off, so maybe let the player shoot anytime? A battery bar would also help, now the light running out feels a bit sudden. The music was cool at the start but I think it stops after a while, maybe it's not looping? And a small transition between nights would make them feel more like different levels.
Nice game, well done!