I thought your own turrets being able to hurt you would be interesting in something like a tower defense, but the way it is implemented right now, it feels too chaotic for the player to have a fair chance of dodging their own bullets, and it gets worse when you want to pick up gems. I've had the most success by abusing Suika's beer to get a few upgrades.
Cute graphics, though. It's amazing what you've been able to do with so few pixels.