Spent around 20 minutes playing it, but never got through the jumping part (although I did jump sometimes to try some shortcuts) (I'm very potato).
Absolutely loved the concept, the mechanic was novel for the jam, and I had a lot of fun trying to reach higher. Every time I fell it usually was because I was being too careless trying to run all the way back to where I was. And soundtrack was an easy 10/10.
The only frustrating bit was that I was playing in the browser, and sometimes when I right clicked to jump, the mouse menu would appear, grabbing the input from my keyboard and making me fall in the game. Not sure if you have to set up mouse capture on the Unity build to avoid this kind of problem (when the mouse stays "hidden" in the game, like in FPS).
Great game, congrats!