Having a game be less hand holding is good but it should at least hint at how to do a very important move tech
I couldn't even pass the 2nd lvl without checking the gifs and reading more of the description
dash jumping isn't a speedrun strat it's a basic move you need to do for every lvl after lvl 1 so it should be understandable without deeper inspection
legally obliged to also say that this is my personal opinion, but think you made it too difficult for a gamejam where 1 death can make a player quit