Really liked the concept of the game; a stranger has broken into your home at night and you need to escape to safety.
I think my main point that is missing in the game is stealth mechanics. For a game that is souly based on you not getting caught by a killer the protagonist seems pretty determined to die that night when they decide to automatically open every door you're next to or can't crouch for the advantage of hiding behind objects. I think the addition of a crouch button can help a lot considering the small tight map you're in with no real way of hiding.
However, I still enjoyed the hunt for keys while hearing heavy boots behind me, the fact that your character can't run unless they've been seen actually may be a great rule that adds to the scary tension.