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Defeat every boss in Ulduar in 25-player mode.

Defeat the bosses of The Descent into Madness area of Ulduar in 25-player mode.

Complete the Ulduar raid achievements listed below.

Defeat Mimiron in Ulduar after activating his Self-Destruct mechanism.

Defeat the Keeper bosses of Ulduar.

Defeat Mimiron after activating his Self-Destruct mechanism in 25-player mode.

Defeat the Keeper bosses of Ulduar in 25-player mode.

Defeat Hodir in Ulduar before he shatters his Rare Cache of Winter.

Defeat Hodir in Ulduar without letting any of the frozen adventurers perish.

Defeat Hodir in Ulduar without any raid member being hit by Flash Freeze.

Defeat Hodir before he shatters his rare cache in 25-player mode.

Defeat Hodir without any friendly NPC dying in 25-player mode.

Defeat Hodir without any raid member being hit by Flash Freeze in 25-player mode.

Defeat Thorim in Ulduar while Sif is present.

While fighting Thorim in Ulduar, force him into the arena before Sif departs.