Thanks for updating! Apologies that I wasn't able to leave more feedback before the jam deadline.
In terms of improvements, I would probably gradually scale up the difficulty, right now the jump between Levels 1-3 is pretty extreme. And since this is a game for experienced platformer players, I would recommend making the first few levels a little hard to help with that >:)
I also noticed that holding space bar allows you to slide up walls, which was a cool feature but the physics of it felt a little finicky at times. Maybe clamping the speed when sliding would help make that more predictable.
Other than that, I'm loving the game! Will copy these comments over to my jam rating for this game as well :)