Thanks for playing!
I don't know if you found any stat upgrades (range, damage and health), but there are a few in the first area and the beginning of the second area, one of which is after the first boss (the bosses can be beaten in whichever order). I've tried to make it so that hazards don't usually come as a surprise in your face but that can happen.
Yeah I was experimenting with friction in the movement and it's not for everyone. Most jumps should be doable without having to gain momentum, but the platforming has been made with platforming veterans in mind and the game's not that easy anyway. I actually think the second area is harder than the third one due to that cloud platforming.
Glad you liked them, I had fun drawing the art and composing the soundtrack! Yep, they're a bit random and I had planned them to work somewhat differently than they turned out (also killing other enemies).