Cute idea, but not very engaging gameplay right now. Gets repetitive fast and I had to actively try to lose for the game to end (very easy to defend when only a small bit of pizza remains). Holding down the button becomes painful after a while and there seems to be no reason to let it go - maybe the gun should fire automatically?
Encountered a small graphics glitch where a projectile graphic got stuck near the middle of the screen - not sure how I did that.