I'll admit it uh, took me a bit... but I did like the mechanics that progressed as the stages went up. Pacing entirely depends on the player in these games, but the element of chaos kept it just frustrating (if spicy) enough to leave a mark. The lack of response on jump input combined with that do make it feel almost arbitrary at times, as though the input timing doesn't matter -- which some may like, but some will definitely develop a pure hatred for.
I dig the style for the art and like the way it evolves, too. Where's the music at though? I think it would help a lot to make it a smoother experience! On top of which, I do agree with Zoid's smooth-screen remarks about making blind jumps... it exaggerates the difficulty in a few spots, though that may be by design too.
And uh, well... I miss her bros...