Wow, first off this game visually, is stunning.
Second, the climbing is real fun! I just tried it for like 15mins, and I'm still getting the hang of it, but it seems challenging and it works!
I know you are still gonna add information, but I played it without instructions and after trial and error the only thing I couldn't figure out is the "rope gun". I can shoot it, but then don't know what to do :D
The only "bad" critic I would say is the echo sound. I got the idea, and it's a really cool one, but very early on it gets a bit annoying because it's so loud, and everything echos so it gets a little noisy and clustered. It's really a minor thing because after a while, I could ignore it.
Very fun and cool idea! I still plan on collecting all the pieces ;)
Congrats!!!