I think the level design could be tightened up a bit, maybe it is not nessecary to use the whole screen for the levels? Also it was not clear what to do in the final level and it did not feel that fun to move the character around with the cloud. Maybe change the controls so that the cloud stays forever but you cannot move with it while solid and add a cooldown to transforming. That makes it less of a “skill” game and more of a puzzle game.
Other notes are that the cloud should probably not be able to collide with player guy from the top, use one-way platforms for that to make it only be able to lift him up.
The combat felt tacked-on. I would have preffered a no-health bar situation game I think. Either you have the guy shocked or not.
I liked the animations!