Pretty good game there :P
It could always use more, such as additional game modes or even power-ups. However, the style is pretty original and that's most certainly a very good thing. I can't believe I dumped about 30 minutes into this game; it's something I usually don't do in any Flash game hahah! I gave points in Violence and Humor simply because of the spikeys popping the balloons and watching the "OMG I'm falling heeeeeeeelp me!!!" expression on the blue guys face.
I suck at writing in extreme detail like I see others do, so I'll just be to the point. Great game, good points in originality, and I still see room for further improvement (with additional game modes at the #1). Thanks for the entertainment and good luck with future projects. :)