This is a really cool concept and good execution! There are a few problems however. Some levels can be beaten it a matter of seconds with no deaths, while others(the last one specifically) can take upwards of twenty deaths and can take a while to beat. The big problem are the physics when the screen is rotating, as often you physically can't move, which wouldn't be a problem, but because you keep on shooting, your bullets hit you when you are physically incapable of dodging them. Nitpicks aside, it's a very cool game with a lot of potential, I feel!