Can't Do That While Stunned (25 player)
Defeat the Assembly of Iron without allowing Stormcaller Brundir to damage anyone with Chain Lightning or Lightning Whirl in 25-player mode.
10
20/08/23
The Antechamber of Ulduar (25 player)
Defeat the bosses of The Antechamber area of Ulduar in 25-player mode.
10
20/08/23
One Light in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of one or fewer Keepers in 25-player mode.
10
31/07/23
The Descent into Madness (25 player)
Defeat the bosses of The Descent into Madness area of Ulduar in 25-player mode.
10
31/07/23
Two Lights in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of two or fewer Keepers in 25-player mode.
10
31/07/23
Three Lights in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of three or fewer Keepers in 25-player mode.
10
31/07/23
I Love the Smell of Saronite in the Morning (25 player)
Defeat General Vezax after defeating the Saronite Animus in 25-player mode.
10
31/07/23
Observed (25 player)
Defeat Algalon the Observer in 25-player mode.
10
31/07/23
Firefighter (25 player)
Defeat Mimiron after activating his Self-Destruct mechanism in 25-player mode.
10
31/07/23
I'll Take You All On (25 player)
Defeat Thorim, the Ancient Rune Giant and the Runic Colossus in 25-player mode.
10
31/07/23
Lose Your Illusion (25 player)
Defeat Thorim while Sif is present in 25-player mode.
10
31/07/23
Siffed (25 player)
Force Thorim to enter the arena while Sif is present in 25-player mode.
10
31/07/23
Drive Me Crazy (25 player)
Defeat Yogg-Saron without any raid member going insane in 25-player mode.
10
I Choose You, Steelbreaker (25 player)
Defeat the Assembly of Iron with Steelbreaker as the last member alive in 25-player mode.
10
Conqueror of Ulduar
Defeat each boss in Ulduar in 25-player mode without allowing any raid member to die to that boss at any point during that raid lockout period.
10
Orbit-uary (25 player)
Defeat Flame Leviathan with 4 Orbital Defense Systems active in 25-player mode.
10
Orbital Devastation (25 player)
Defeat Flame Leviathan with 2 Orbital Defense Systems active in 25-player mode.
10
Orbital Bombardment (25 player)
Defeat Flame Leviathan with 1 Orbital Defense System active in 25-player mode.
10
Nuked from Orbit (25 player)
Defeat Flame Leviathan with 3 Orbital Defense Systems active in 25-player mode.
10
Three Car Garage (25 player)
Defeat Flame Leviathan while in each of the following vehicles in 25-player mode.
10
The Secrets of Ulduar (25 player)
Defeat every boss in Ulduar in 25-player mode.
25
In His House He Waits Dreaming (25 player)
Experience all 3 visions of Yogg-Saron's mind in 25-player mode.
10
The Keepers of Ulduar (25 player)
Defeat the Keeper bosses of Ulduar in 25-player mode.
10
The Siege of Ulduar (25 player)
Defeat the bosses of The Siege area of Ulduar in 25-player mode.
10
Set Up Us the Bomb (25 player)
Defeat Mimiron without anyone in the raid being hit by the following in 25-player mode.
10