This definitely would make a great opening to a horror platformer type of game, if such a genre exists. It has a good foundation for some a little haunted, a little creepy, potentially playing with your perception. It's a great start!
The jumping was a little clunky at times, I wasn't a fan of just how fast you seem to fall when you let go of the button, and the camera seemed to be a bit delayed behind my movements/respawning, but overall not bad, just unpolished.