Loved the concept! This totally feels like that weird period where you aren't sure whether you are awake, or still slightly sleeping. I like that every hallway is like a sort of minigame, really creative. It's real tough to beat, but totally worth it. You nailed it on atmosphere! Other than that I really liked the art (really nice use of other people's screenshots too), and the effects/animations were awesome as well. Goood job man, you can be proud!