[@Mardox]

"The lesser fiends like demons and imps can be killed with regular weaponry, though the fact they know fire magic makes them harder to kill." He says. "If archdemons could permanently kill one another, there would be only one archdemon coming from The Nightmare Lands. As for an Archangel, you might want to ask "The Emperor" also, remember, I said that Stygian Iron can only wound them, not kill them. An archangel would probably be able to dispatch about four of the nine, the dragon two and I would be able to keep two of them busy while the dragon and the Archangel comes in and kill them."