This was interesting. I really liked the concept and the music was good. It surprised me when I went to sleep the second time and woke up in the nightmare looking level with the creepy music.
I did find a lot of bugginess with the collisions and I ended up getting bugged out and glitched to the end of the game at one point lol. This probably would've been a better project for GBStudio rather than Unity as to not have to deal with the engine bloat for a simple game.
Still, I thought it was cool and I could definitely see a more expanded version being really neat! Good job with this!