Re: Why did the Queen of Unaroyal destroy herself?
Most of these last stand cities tend to be in terrain that makes it difficult to assail on foot. Transylvito is utterly inaccessible. Faq is in a remote mountain pass. Gobwin's Knob is on a volcano. Charlescomm is apparently near the top of the world. However, it also makes it difficult to flee on foot, if not impossible during a siege. (And what do Barbarians do, anyway?)
Where does it say that Unaroyal wasn't a helm's deep? One way in, one way out.