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Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 25-player Heroic mode.

Complete the 25-player raid achievements listed below.

Allow Necrotic Plague to stack to 30 before defeating the Lich King in 25-player mode.

Defeat Blood-Queen Lana'thel once as a vampire and again without becoming a vampire in 25-player mode.

Defeat every boss in Icecrown Citadel in 25-player mode.

Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 25-player mode.

Enter every portal spawned by Valithria Dreamwalker before healing her to full health in 25-player mode.

Defeat Lady Deathwhisper with at least five different types of Cultists active at the time of her demise in 25-player mode.

Defeat the Assembly of Iron in Ulduar with Steelbreaker as the last member alive.

Defeat every boss in Ulduar.

Defeat the bosses of the Antechamber area of Ulduar.

Complete the 10-player raid achievements listed below.

Defeat the Assembly of Iron with Steelbreaker as the last member alive in 10-player mode.

Defeat every boss in Ulduar in 10-player mode.

Defeat the bosses of The Antechamber area of Ulduar in 10-player mode.