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Defeat Thorim, the Ancient Rune Giant and the Runic Colossus in 10-player mode.

Defeat Thorim without any raid member being struck by Lightning Charge in 10-player mode.

Defeat Hodir before he shatters his rare cache in 10-player mode.

Defeat Hodir without any raid member having more than 2 stacks of Biting Cold in 10-player mode.

Defeat Hodir without any friendly NPC dying in 10-player mode.

Defeat Hodir without any raid member being hit by Flash Freeze in 10-player mode.

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

Defeat Algalon the Observer in 10-player mode.

Defeat Kologarn without any raid member being hit by Focused Eyebeams in 10-player mode.

Destroy both of Kologarn's arms and then Kologarn himself within 12 seconds in 10-player mode.

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

Defeat Ignis the Furnace Master in 4 minutes in 10-player mode.

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

Defeat XT-002 Deconstructor after destroying his heart in 10-player mode.

Defeat XT-002 Deconstructor in 205 seconds in 10-player mode.