Amazing game! Really well done! Especially for a 5 day build! I think my only criticism is that when moving the key, sometimes you get instantly put back into a mini-game because the key is still touching the edges - Fist full of shrimp explains this better!
Overall the game was amazing to look at, scared me a few times and I loved the wall interactions for adjusting height, difficulty etc...
Well done! I'd love to see more built upon this game!