I don't mind dying as often as I did as long as it's too a funky tune.
The core premise of the game made sense without much explanation, although I didn't quite get the bomb mechanic. I liked the overall crayon/pastel look of the game, I'd just suggest being more deliberate with your color choices. For instance, having the enemies being a different color than you, and having their bullets look like yours, since their bullets and your bullets will hurt you just the same.
That said, I do like the risk/reward of trying to shoot down enemies with the draw back that every miss is more peril for the player. After firing off several shots, I changed my strategy to a defensive one, letting the stray bullets take down the baddies in due time. Neat concept!