It's a complete game, the post-processing effects look nice.
Your levels are probably a bit too big or there's not enough checkpoints along with not much in terms of direction leads to a lot of wandering around. The first 2 levels didn't seem very horror based at all.
You had a bit of atmosphere with the last one with the different track and the darkness. Refine that and add to the fear factor and you're on your way.
You'll probably want to zip up your files, itch is warning people that your game could be a scam because you have just the .exe for download. This will stop and drastically reduce the number of people playing your game.