This game is awesome! The jump scares and atmosphere are very well done. It's definitely one of the better PT style horror games that I've played. Thanks for making it!
Thinking about future games, I think you could better maintain the tension with strategic use of music and sound effects. This would help ensure tension is maintained between scares. For example, if the player is walking down a hallway hearing sounds from behind them or from behind the doors helps build dread. There were some parts of the game that went almost completely silent, which I think hurt the horror atmosphere because it gives players a break from the building tension.