Pretty nifty, I quite like the look of the levels and the core concept is solid. I think the rotation effect is a little slow, especially since it doesn't stop the level timer from ticking down. It does let the player hang in the air during a jump so that's really neat.
There seem to be some collision detection issues, in the very first level I ran through all the traps without taking a single hit, to the point where I didn't know for sure that they were meant to be traps. It's most noticeable in the second zone with the spikes since it's much clearer when those are up or down, sometimes I'd be standing in raised spikes without taking damage, other times it felt like I got hit when they'd already gone down.