I liked the powers, especially the gravity one. Had some problem with the controls though, sometimes the jump wouldn't input, also the hero slipped out of some short platforms in the super jump segment. He was near the edge and even without moving he would simply slip and fall, made some jumps frustrating, but the level design was nice.
One thing I would have enjoyed was to have some other visual/audio cue regarding power about to run out, this way movement could be more dynamic instead of stopping to look at the timer!