This instance has three boss encounters and four bosses. The first boss is Watchkeeper Gargolmar. Up the tower beyond him, the path splits. The right path leads to Omor the Unscarred (which is usually killed second), the left leads to Vazruden and Nazan, which is the most difficult encounter in this instance. After killing the dragon and its rider a Reinforced Fel Iron Chest appear. Curiously, despite most people and even various in-game sources placing Vazruden as the final boss, Omor is the only required kill for the non-Heroic achievement