This was an amazing game with striking visuals. I loved the physics background and the basically the entire game.
My only suggestion is that it would be a lot easier if you either change the way you shoot with the bazooka(instead of having to look in the direction that you want to shoot, you can just shoot in any direction), or you can change the level design so that there aren't areas where you have to shoot directly above or below you.
Apart from that, I think you have a crazy good game! Congrats! :)