Great job, this is really fun! The action can get really intense - I definitely jumped out of my seat a few times because the floating skeletal heads crept up on me from behind. By the time I made it to level 10 it felt like the response time of the leap was the limiting factor; I had my hands in the "charge up" position and was ready to fling more magic, but it took a second or two for my hand pose to be recognized (and then I was toast).
Good work :)