Guardian: We must retake the Keep from the undead… or die trying!
Hero: Actually, if you fail you will probably become undead.
Guardian: The entire undead army is the work… of a single War Fiend.
Hero: A War Fiend?
Guardian: A War Fiend is an abomination from the underworld.
Guardian: Everyone he slew with his infernal blade rose as a Skeletal Warrior.
Hero: Oh man… that means…
Guardian: Aye. These skeletons used to be inhabitants of the keep.
Guardian: We must avenge them… and slay the War Fiend!