This game looks great! It's really hard, but I do feel that its fair. If you take your time, you won't mess up. Rushing only makes it take longer. that being said I still gave up after a super punishing fall at 28% I'd welcome some checkpoints along the way.
Also - just messing around in there. Dashing toward the floor getting getting real high speeds with gravity on your side is SUPER FUN. Consider adding some parts of the game where you do that? I may just not have gotten far enough to see them...