The very best part of this concept is that you make the player greedy, seeing all those golden swords strewn about. But after a couple of tries, one realizes that greed will kill you. A well-told story in the least amount of pixels.
Liked the screen-shake, when you transform an enemy.
A mechanic that would have made it even more interesting would have been that some ememies require that you hold your hand over them for a 1-second duration, instead of simply sweeping over them.
Well done, Julien!
(11200 was my highscore, after 7 tries.)