This game was so fun~ I really like the "your own projectiles can kill you" implementation, and I especially love that the projectiles bounce off of the enemies and walls, as that lends to some nifty math-based shots, ahaha~ The player sprite and the enemies are adorable, too! I also enjoyed picking a "twist" for the subsequent zones, I can see how you would be able to expand on this foundation you have created! Very fun, actiony game, overall! ^^