Very interesting climbing mechanics! I think you have some cool potential there!
I like the idea of the core climb mechanic, but it was a bit frustrating that I had to rotate to keep it in place - or was it possible, and I just missed it? But basically - why can't I just hang and need to rotate all the time? This can be easily solved, though, for example - by making a separate button for gripping.
Anyways, with a lot of polish, it definitely can turn into a cool unique game. Good job!