First subjugation mission - Abernathy is my base. Go in, subdue the population but the original molerats appear and are unkillable. Can shoot them down to zero but they bounce back to full strength and keep on going. Tried going before my raiders came in to kill them but again - immortal. Plus is triggered the raid. They're not killing my raiders either from what I can see, just turns into a neverending skirmish.