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

Defeat the Assembly of Iron with Runemaster Molgeim as the last member alive in 25-player mode.

Defeat Freya while leaving at least 1 Elder alive in 25-player mode.

Defeat XT-002 Deconstructor without him recovering any health from XS-013 Scrapbots in 25-player mode.

Defeat Thorim while under the effect of Aura of Celerity in 25-player mode.

Defeat the bosses of The Antechamber area of Ulduar in 25-player mode.

Defeat 25 Dark Rune Guardian Dwarves with Razorscale's Flame Breath in 25-player mode.

Defeat Kologarn without destroying either of his arms in 25-player mode.

Destroy a Flame Leviathan Defense Turret in 25-player mode.

Defeat Algalon the Observer after closing 3 Black Holes within 10 seconds in 25-player mode.

Defeat Yogg-Saron without any raid member going insane in 25-player mode.

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

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

Defeat the Assembly of Iron with Steelbreaker as the last member alive in 25-player mode.

Defeat Flame Leviathan with 3 Orbital Defense Systems active in 25-player mode.

Defeat Flame Leviathan with 4 Orbital Defense Systems active in 25-player mode.

Defeat Ignis the Furnace Master in 4 minutes in 25-player mode.

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

Defeat Thorim without any raid member being struck by Lightning Charge in 25-player mode.

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

Defeat XT-002 Deconstructor without any raid member dying from a Gravity Bomb in 25-player mode.

Defeat Thorim while Sif is present in 25-player mode.

Defeat Kologarn without any raid member being hit by Focused Eyebeams in 25-player mode.

Defeat the Assembly of Iron while under the effect of an Iron Boot Flask in 25-player mode.

Defeat XT-002 Deconstructor after destroying his heart in 25-player mode.

Defeat 2 Ancient Water Spirits, 2 Storm Lashers and 2 Snaplashers within 10 seconds in 25-player mode.

Defeat the Feral Defender while defeating Auriaya in 25-player mode.

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

Defeat Kologarn after causing at least 25 Rubble creatures to spawn in 25-player mode.

Force Thorim to enter the arena while Sif is present in 25-player mode.

Defeat the Assembly of Iron without allowing Stormcaller Brundir to damage anyone with Chain Lightning or Lightning Whirl in 25-player mode.

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.

Defeat every boss in Ulduar in 25-player mode.

Defeat Algalon the Observer in 25-player mode.

Experience all 3 visions of Yogg-Saron's mind in 25-player mode.

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

Defeat Ignis the Furnace Master after shattering 2 Iron Constructs within 5 seconds in 25-player mode.

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

Defeat Freya while leaving at least 2 Elders alive in 25-player mode.

Defeat Thorim, the Ancient Rune Giant and the Runic Colossus in 25-player mode.

/Kiss Sara in Ulduar while she is angry with you in 25-player mode.

Destroy 100 Steelforged Defenders in 10 seconds on the Ulduar gauntlet in 25-player mode.

Possess the effects of Toasty Fire, Storm Power and Starlight at the same time in 25-player mode.

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

Defeat XT-002 Deconstructor in 205 seconds in 25-player mode.

Defeat Flame Leviathan with 1 Orbital Defense System active in 25-player mode.

Defeat Algalon the Observer in 25-player mode without any raid member dying to Algalon at any point during that raid lockout period.

Defeat General Vezax without any raid member being hit by Shadow Crash in 25-player mode.

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

Defeat Flame Leviathan while in each of the following vehicles in 25-player mode.

Destroy both of Kologarn's arms and then Kologarn himself within 12 seconds in 25-player mode.

Defeat the Assembly of Iron with Stormcaller Brundir as the last member alive in 25-player mode.

Defeat Flame Leviathan without causing a System Shutdown in 25-player mode.

Defeat 20 XS-013 Scrapbots within 12 seconds using XE-321 Boombots in 25-player mode.

Defeat Freya while she is affected by 25 stacks of Attuned to Nature in 25-player mode.

Defeat the bosses of The Siege area of Ulduar in 25-player mode.

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

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

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

Defeat Flame Leviathan on the first try without anyone repairing their vehicle in 25-player mode.

Defeat Razorscale without allowing her to fly into the air more than once in 25-player mode.

Survive being thrown into Ignis the Furnace Master's Slag Pot in 25-player mode.

Defeat Hodir without any raid member having more than 2 stacks of Biting Cold in 25-player mode.

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

Defeat Flame Leviathan with 2 Orbital Defense Systems active in 25-player mode.

Defeat Freya within 20 minutes of the first creature you kill in the Conservatory of Life in 25-player mode.

Defeat Mimiron without anyone in the raid being hit by the following in 25-player mode.

Defeat Elder Brightleaf, Elder Ironbranch and Elder Stonebark within 15 seconds of each other in 25-player mode.

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

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