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Defeat the Ascendant Council in the Bastion of Twilight on Heroic Difficulty.

Defeat Valiona and Theralion in the Bastion of Twilight on Heroic Difficulty.

Defeat Halfus Wyrmbreaker in the Bastion of Twilight on Heroic Difficulty.

Defeat Erudax without letting a Faceless Corruptor begin to cast Twilight Corruption on any of Alexstrasza's Eggs in Grim Batol on Heroic Difficulty.

Defeat Erudax in Grim Batol on Heroic Difficulty.

Defeat Erudax in Grim Batol.

Defeat Ragnaros in Firelands on Heroic Difficulty.

Defeat Majordomo Fandral Staghelm in Firelands on Heroic Difficulty.

Defeat Baleroc in Firelands on Heroic Difficulty.

Defeat Alysrazor in Firelands on Heroic Difficulty.

Defeat Lord Rhyolith in Firelands on Heroic Difficulty.

Defeat Shannox in Firelands on Heroic Difficulty.

Defeat Beth'tilac in Firelands on Heroic Difficulty.

Kill every Vile Spirit that spawns before it explodes and then defeat the Lich King in 25-player mode.

Defeat the Lich King in Icecrown Citadel in 25-player mode.