I really enjoyed the turn that this game had taken. At first it was decent but as soon as the true side of this game showed its colors it became a lot more fun! I liked the creepiness and puzzle aspect of this game.
My only thing is for the pitch black puzzle part I believe it just hinders gameplay a little, I was able to find my way through just fine, but it kind of broke my immersion a little bit. I don't think the path needs to be obvious, but if there was a small glow around the character or a little indicator it could help that part flow a little bit better, while still being a puzzle.
But honesty this was a great game with a lot of depth, nicely done