Hey, good work!
I enjoyed this game, so here is a little constructive criticism. I got 1820 in this game, which apprently is 4th best (3rd best if you consider that Ruben Perez has played with multiple names) but it's a new game and doubtless hundreds of people will surpass me once the game catches on). Um, yeah, I kinda wish the game was easier, like for example, if you get hit, you should be invincible for about a second before you can get hit again. I think that would help. Also, you should add more sound effects, and maybe also add a way to play with the keyboard instead of the mouse.