Oh I love me some tricky ricochet puzzling! Fun concept, good execution, solid graphics and always nice with a bit of chain explosions. Good sound feedback, you could tell what was going on. My only gripe is that sometimes the "out of ammo" screen just doesn't happen, but since the menu button is right there, it's easy to get around.

Rad!

Reminds me of the old bloons games (not the tower defense ones, the ones where you shot the bloons yourself). Also, as Dylaan said, a reset button within the levels would have been nice.