I had a lot of fun with this one! Really great presentation and a unique idea. A lot of the jumps were challenging in a fun way and you can tell a lot of thought was put into the puzzles.
My only criticisms would be that there were some jumps I had to figure out completely via trial and error, because the next cliff or ledge was out of view. It wasn't a huge deal but those were definitely frustrating because it didn't feel like I missed them because of my own mistakes, but instead for what basically amounted to luck. I also got lost a couple times and would've appreciated some way to know I was on the right path or not, especially when I was descending the mountain or doing something else counter-intuitive.
Overall, really great entry! I'd love to see what this looks like if you continued to develop it further.