Cool concept. I'd have liked to have seen rockets coming from both sides of the screen, rather than just the right, the speed of the rockets seemed perfect for showing up from both sides. As for the animations/art, I loved the crouching animation, the player looks like he's scared and holding his head while looking down scared. That goes very well with the music of the game. Hitboxes could have been just a smidge smaller I think, for those boxes.