I hid in the brain vault underground and waited til' they dug down, and I gibbed a bunch in the head with a sniper until one took a sniper and shot me in the forehead. I held off about ten hostiles until one took a shotgun and opened fire on my soldier. I killed that one with a third soldier and took his shotgun, which I killed that Ronin soldier that causes enemies to hesitate and I said, "Your hair is hot, but you got a gun" and killed her. Then I was hit by a dummy's energy blaster.
EDIT: One of my AIs thought it would be cool to try his flak cannon and ended up blowing himself up, while the bullet bounced off the wall and hit my brain. loving AIs.