Good try! The game's fairly basic, collecting items that trigger a change in enviroment, letting you collect the next item and so on until you escape. Bar it's simplicity, which might be a time constraint or current knowledge of the engine.
A few things to note are that the pick up items might need more contrast from the enviroment, understandably you want to hide them, but a grey black hammer in a shadowy corner of the room isn't great, granted I didn't have trouble finding it, it's still something to consider (Granted, you do use Line of Sight behind the TV so that the player can see the grate disappear, that's good, though I missed it the first time). There is also a bug where most of the doors can be walked right through without needing items, which is problematic to the game itself.
Apart from that, the camera bobbing and the sound effects of steps put a good atmosphere and sense of presence in a first person horror, even if you don't have a body when you look down, hearing the sound of your steps is a good immersive touch.
Good job on the game!