Thanks for the specific feedback, Dunamis!
I indeed still have a lot of work to do polishing the movements. As some of the other comments mentioned, these are things I didn't catch when testing, so I'm glad I shared it with the wider public.
Progression can likely be fixed with more environmental cues, I'll keep this in mind.
A lot of these issues are due to the fact that it's a jam game I finished in about 4 days or so. I hope this doesn't put you off from the potential of the mechanic to be used in full games.
I'll likely continue to release small demos like this as I polish the climbing mechanic. When it's done I will work on a full game and take more time to polish it up.
Hope you enjoyed nonetheless, and that you follow my work! :)