I gave it at least 8 hours of play, quite fun, Im going through some stuff in my life right now and this helped me relax a little, I dont know if you'll keep working the game, but I woudl suggest some things.
SPOILER(?), I discovered the super jump trick, wich was kind of hard to discover I dont know if that was supposed to be a secret or I was just dumb, or you hadnt implemented a level for it yet, If you're still working in the game I would add places where to use it
(extending few plataforms a little bit, or lowering some walls just a tad would allow you to skip some sections and you would just need to balance risk reward, a good location for this would be at the end of the first sliding hook, if you could make the last jump you could run and dash through that whole hook zone)
Also, if you dash out of a plataform, you can dash again midair, wich makes "that" section of the tutorial super easy, dont know if its a bug or not, I used it in my run.
Another thing, after you enter the levels with altered dashes and jumps, if you force quit with Q you can explore other levels with that setup for a while, I think clearing a stage resets it, not really useful, but somewhat annoying, and somewhat interesting.
I think I will leave it at that, I got a good enough time, and replayed the entire game (even unecesary helps) just to check if I could save any time, my speedrun is nowhere near perfect but other than playing it seamless without dying without saving, my route is the optimal I think.
Thanks for the game.