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Defeat the leaders of Hellfire Ramparts on Heroic Difficulty.

Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 10-player Heroic mode.

Defeat the bosses of The Crimson Hall in Icecrown Citadel in 10-player Heroic mode.

Defeat the bosses of The Plagueworks in Icecrown Citadel in 10-player Heroic mode.

Defeat the first four bosses in Icecrown Citadel in 10-player Heroic mode.

Defeat 20 Frenzied Crocolisks within 10 seconds during the Lockmaw encounter in the Lost City of the Tol'vir on Heroic Difficulty.

Defeat Mimiron after activating his Self-Destruct mechanism in 10-player mode.

Complete the 10-player raid achievements listed below.

Defeat Auriaya without destroying her Sanctum Sentries in 25-player mode.

Defeat XT-002 Deconstructor without him recovering any health from XS-013 in 10-player mode.

Defeat Yogg-Saron without the assistance of any Keepers in 10-player mode.

Defeat Yogg-Saron with the assistance of one or fewer Keepers in 10-player mode.

Defeat Yogg-Saron with the assistance of three or fewer Keepers in 10-player mode.

Defeat Yogg-Saron with the assistance of two or fewer Keepers in 10-player mode.

Defeat Yogg-Saron within 7 minutes in 10-player mode.