I am responding to your request for feedback. I like that the game is difficult, but I would like an infinite lives mode. I'd also like joystick "up" to not make the player jump. I haven't made it very far due to both these issues.
Thanks for the feedback HouseRule. I'm going to revise the Joystick issue and release a version with infinite lives so people can finish the game. Thanks for the comment!
Ok, I just understood you about the joystick. The problem is that the button is needed for the shot, so the jump uses the direction up of the joystick.