I'll Take You All On (25 player)
Defeat Thorim, the Ancient Rune Giant and the Runic Colossus in 25-player mode.
10
I Have the Coolest Friends (25 player)
Defeat Hodir without any friendly NPC dying in 25-player mode.
10
Nerf Scrapbots (25 player)
Defeat 20 XS-013 Scrapbots within 12 seconds using XE-321 Boombots in 25-player mode.
10
Orbital Bombardment (25 player)
Defeat Flame Leviathan with 1 Orbital Defense System active in 25-player mode.
10
The Antechamber of Ulduar (25 player)
Defeat the bosses of The Antechamber area of Ulduar in 25-player mode.
10
Rubble and Roll (25 player)
Defeat Kologarn after causing at least 25 Rubble creatures to spawn in 25-player mode.
10
I Choose You, Stormcaller Brundir (25 player)
Defeat the Assembly of Iron with Stormcaller Brundir as the last member alive in 25-player mode.
10
Nerf Gravity Bombs (25 player)
Defeat XT-002 Deconstructor without any raid member dying from a Gravity Bomb 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
A Quick Shave (25 player)
Defeat Razorscale without allowing her to fly into the air more than once in 25-player mode.
10
Hot Pocket (25 player)
Survive being thrown into Ignis the Furnace Master's Slag Pot in 25-player mode.
10
Shutout (25 player)
Defeat Flame Leviathan without causing a System Shutdown in 25-player mode.
10
The Siege of Ulduar (10 player)
Defeat the bosses of The Siege area of Ulduar in 10-player mode.
10
Nerf Gravity Bombs (10 player)
Defeat XT-002 Deconstructor without any raid member dying from a Gravity Bomb in 10-player mode.
10
Nerf Engineering (10 player)
Defeat XT-002 Deconstructor without him recovering any health from XS-013 in 10-player mode.
10
A Quick Shave (10 player)
Defeat Razorscale without allowing her to fly into the air more than once in 10-player mode.
10
Shattered (10 player)
Defeat Ignis the Furnace Master after shattering 2 Iron Constructs within 5 seconds in 10-player mode.
10
Hot Pocket (10 player)
Survive being thrown into Ignis the Furnace Master's Slag Pot in 10-player mode.
10
Just Can't Get Enough (25 player)
Defeat Kel'Thuzad in Naxxramas while killing at least 18 abominations in his chamber in 25-player mode.
10
The Hundred Club (25 player)
Defeat Sapphiron in Naxxramas without any member of the raid having a frost resist value over 100 in 25-player mode.
10
Momma Said Knock You Out (25 player)
Defeat Grand Widow Faerlina in Naxxramas without dispelling or preventing frenzy in 25-player mode.
10
Make Quick Werk Of Him (25 player)
Kill Patchwerk in Naxxramas in 3 minutes or less in 25-player mode.
10
The Spellweaver's Downfall (10 player)
Defeat Malygos in 10-player mode.
10
Denyin' the Scion (10 player)
Deliver a killing blow to a Scion of Eternity while riding on a hover disk in 10-player mode.
10
Twilight Assist (10 player)
With at least one Twilight Drake still alive, engage and defeat Sartharion the Onyx Guardian in 10-player mode.
10
Besting the Black Dragonflight (10 player)
Defeat Sartharion the Onyx Guardian in 10-player mode.
10
Less Is More (25 player)
Defeat Sartharion the Onyx Guardian and the Twilight Drakes with fewer than 21 players in 25-player mode.
10
Arachnophobia (25 player)
Kill Maexxna in Naxxramas within 20 minutes of Anub'Rekhan's death in 25-player mode.
10
The Arachnid Quarter (25 player)
Defeat the bosses of The Arachnid Quarter of Naxxramas in 25-player mode.
10
The Fall of Naxxramas (25 player)
Defeat every boss in Naxxramas in 25-player mode.
50
Denyin' the Scion (25 player)
Deliver a killing blow to a Scion of Eternity while riding on a hover disk in 25-player mode.
10
The Fall of Naxxramas (10 player)
Defeat every boss in Naxxramas in 10-player mode.
25
Kel'Thuzad's Defeat (10 player)
Defeat Kel'Thuzad in Naxxramas in 10-player mode.
10
Sapphiron's Demise (10 player)
Defeat Sapphiron in Naxxramas in 10-player mode.
10
The Plague Quarter (10 player)
Defeat the bosses of The Plague Quarter of Naxxramas in 10-player mode.
10
The Safety Dance (10 player)
Defeat Heigan the Unclean in Naxxramas without anyone in the raid dying in 10 player mode.
10
The Military Quarter (10 player)
Defeat the bosses of The Military Quarter of Naxxramas in 10 player mode.
10
The Construct Quarter (10 player)
Defeat the bosses of The Construct Quarter of Naxxramas in 10-player mode.
10
The Arachnid Quarter (10 player)
Defeat the bosses of The Arachnid Quarter of Naxxramas in 10-player mode.
10
The Construct Quarter (25 player)
Defeat the bosses of The Construct Quarter of Naxxramas in 25-player mode.
10
The Plague Quarter (25 player)
Defeat the bosses of The Plague Quarter of Naxxramas in 25-player mode.
10
The Safety Dance (25 player)
Defeat Heigan the Unclean in Naxxramas without anyone in the raid dying in 25-player mode.
10
The Spellweaver's Downfall (25 player)
Defeat Malygos in 25-player mode.
25
Kel'Thuzad's Defeat (25 player)
Defeat Kel'Thuzad in Naxxramas in 25-player mode.
10
Sapphiron's Demise (25 player)
Defeat Sapphiron in Naxxramas in 25-player mode.
10
The Military Quarter (25 player)
Defeat the bosses of The Military Quarter of Naxxramas in 25-player mode.
10
Twilight Assist (25 player)
With at least one Twilight Drake still alive, engage and defeat Sartharion the Onyx Guardian in 25-player mode.
10
Twilight Duo (25 player)
With at least two Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian in 25-player mode.
10
Besting the Black Dragonflight (25 player)
Defeat Sartharion the Onyx Guardian in 25-player mode.
25