Same problem here. They loot their own city. I was close to wiping black out. Unfun

I was doing fine until Krell's castle. Waves of lizards so that no matter what i try, their 5 and 6 hex moves surround the missile infantry rendering them useless or dead, or they gang up on a hero or two. UNFUN. And doing a simple turtle maneuver is also UNFUN. One hex forward, stop one hex forward...