I made it! 10 minutes, 21 tries and 1 crystal.
Cool game. I really like the idea of a platformer with really restricted, almost frustratingly so, controls - kind of made it feel like a puzzle having to decide exactly where to jump from.
Nice one!
(I did encounter a slight glitch. I dropped down to a previous level but the camera didn't follow. I jumped around randomly for a bit and it eventually it snapped back when I made it back to the previous level before. Sorry I don't know exactly where it was.)