Well, it's very clear where Kill-BOI 9000 got his name. I'm especially impressed with the number of upgrades there are! I don't really understand the screen with the green gears, since I only got it once at the beginning and end of the game. The stick also feels like a cruel joke, but I'm not sure if that's intentional (either way, it's pretty funny holding up a piece of wood that sometimes swings while I'm standing next to a black hole emitting, flame-spewing cannon bot). That said, it'd be nice if Kill-BOI 9000 started with a gun, as the beginning is a bit awkward.
Also, was the Godot logo inspiration for the drones? There's an undeniable resemblance :)