real cute idea! i like the graphics a lot. i have a few small nitpicks - the controls screen shows up for such a short amount of time that i missed some of the controls the first time (it should have a button to advance when you're ready) and when you're testing out the shooting on the controls screen, you can run out of bullets for the real game... seems a bit punishing, you should have infinite ammo on the controls screen :) the audio was also a little loud
cool enemy design!