The Draco-Incarinatrix 900 acts like a gun that you can shoot at the broodling. You have to figure out the distance. You don't need to charge or stun it. You can shoot the gun before the broodling's first fire blast gets you and interrupts you. Like I said, you gotta test out the distance. But I killed all 8 broodlings this way. Didn't need to charge, etc.