This is incredibly mind boggling, wow! I'm so happy that I could beat it - what a crazy experience. I have nothing to say, only that I'm still trying to wrap my mind around how everything is done, and how you could create puzzles and mazes that in the end make complete sense. Like, how? (Maybe looking into non-euclidean will give me some answers lol)
The water section almost drove me crazy, but getting out of it was so satisfying. The feeling of being lost was spot on, added to the tension of being underwater with limited oxygen.
Also, the music reminds me of World of Horror with its cadence, which is really cool. Did you compose it?
I loved it, great job!