Well made, first moments were well executed and the jumpscares got me nicely, that to say, I like the monster design too, simple but fun. The gameloop also works nicely, my only true critism is that I feel the shelves were not ordered logically, but just my own nitpick lol Not even a real gameplay complaint since for the gameloop you probably want the player to scramble about anyways :D I think maybe one bug I found, if you can call it that, at certain point I started to use it as mechanic, is that if you crouch the ghost can and will move towards you even if you're looking. But ye, maybe that was also intended. Oh and nicely done with the progressive music.
Great work here!