A stunning game with a super creating mechanic. I loved how you created the atmosphere through tight corridors and rocky caves. The world feels very natural and consistent.
Controls-wise, it's very clever. I have to admit it took me a while to realize I could put two hands on one rock at the jump tutorial, but that's probably just me. The game then got really interesting, but also very difficult (maybe a little too much at some places). I also like how you evolved on the gameplay by introducing new types of holds. I reached the part with slippery green holds and then I had to finish playing as it got late, but I definitely enjoyed it until then.
Also, the ambient sounds were really good (and creepy). I wish they happened more often to add to the atmosphere.