Very nice art and animation! I appreciate that the losers don't vanish in a puff of smoke, but fall out of the sky.
The music was rather good, also. I realize you didn't create the music, but it goes well with the gameplay, so it was a good selection.
I would recommend you set it up so that some kind of fullscreen option is available. At this very large window size, I was unable to keep both the HUD (life/score) and the entire playable area onscreen at the same time.