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Defeat Onyxia in 10-player mode.

Defeat Yogg-Saron without the assistance of any Keepers in 25-player mode.

Defeat Yogg-Saron with the assistance of one or fewer Keepers in 25-player mode.

Defeat Yogg-Saron with the assistance of two or fewer Keepers in 25-player mode.

Defeat Yogg-Saron with the assistance of three or fewer Keepers in 25-player mode.

Defeat Yogg-Saron within 7 minutes in 25-player mode.

Defeat every boss in Ulduar in 25-player mode.

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

Defeat 9 Guardians of Yogg-Saron within 12 seconds in 25-player mode.

Defeat General Vezax after defeating the Saronite Animus in 25-player mode.

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

Force Mimiron to kill an Assault Bot with a Rocket Strike in 25-player mode.

Complete the 25-player raid achievements listed below.

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

Defeat Freya while leaving all 3 Elders alive in 25-player mode.