Boned (10 player)
Defeat Lord Marrowgar without any raid member remaining impaled for more than 8 seconds in 10-player mode.
10
The Crimson Hall (10 player)
Defeat the bosses of The Crimson Hall in Icecrown Citadel in 10-player mode.
10
The Orb Whisperer (10 player)
Defeat the Blood Council without anyone in the raid taking more than 23,000 spell damage in a single hit in 10-player mode.
10
The Plagueworks (10 player)
Defeat the bosses of The Plagueworks in Icecrown Citadel in 10-player mode.
10
I've Gone and Made a Mess (10 player)
Defeat the Deathbringer before Mark of the Fallen Champion is cast three times in 10-player mode.
10
Storming the Citadel (10 player)
Defeat the first four bosses in Icecrown Citadel in 10-player mode.
10
I'm on a Boat (10 player)
Claim victory in the Gunship Battle without any raid member visiting the enemy gunship more than twice in 10-player mode.
10
I've Gone and Made a Mess (25 player)
Defeat the Deathbringer before Mark of the Fallen Champion is cast five times in 25-player mode.
10
Storming the Citadel (25 player)
Defeat the first four bosses in Icecrown Citadel in 25-player mode.
10
I'm on a Boat (25 player)
Claim victory in the Gunship Battle without any raid member visiting the enemy gunship more than once in 25-player mode.
10
Onyxia's Lair (10 player)
Defeat Onyxia in 10-player mode.
10
Onyxia's Lair (25 player)
Defeat Onyxia in 25-player mode.
10
Orbital Devastation (10 player)
Defeat Flame Leviathan with at least 2 Orbital Defense Systems active in 10-player mode.
10
Orbital Bombardment (10 player)
Defeat Flame Leviathan with at least 1 Orbital Defense System active in 10-player mode.
10
Unbroken (10 player)
Defeat Flame Leviathan on the first try without anyone repairing their vehicle in 10-player mode.
10
I'll Take You All On (25 player)
Defeat Thorim, the Ancient Rune Giant and the Runic Colossus 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
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 Engineering (25 player)
Defeat XT-002 Deconstructor without him recovering any health from XS-013 Scrapbots in 25-player mode.
10
Must Deconstruct Faster (25 player)
Defeat XT-002 Deconstructor in 205 seconds 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
Hot Pocket (25 player)
Survive being thrown into Ignis the Furnace Master's Slag Pot in 25-player mode.
10
Orbital Bombardment (25 player)
Defeat Flame Leviathan with 1 Orbital Defense System active in 25-player mode.
10
Unbroken (25 player)
Defeat Flame Leviathan on the first try without anyone repairing their vehicle in 25-player mode.
10
I Choose You, Stormcaller Brundir (10 player)
Defeat the Assembly of Iron with Stormcaller Brundir as the last member alive in 10-player mode.
10
The Antechamber of Ulduar (10 player)
Defeat the bosses of The Antechamber area of Ulduar in 10-player mode.
10
I'll Take You All On (10 player)
Defeat Thorim, the Ancient Rune Giant and the Runic Colossus 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 Scrapbots (10 player)
Defeat 20 XS-013 Scrapbots within 12 seconds using XE-321 Boombots 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
Shutout (10 player)
Defeat Flame Leviathan without causing a System Shutdown in 10-player mode.
10
The Plague Quarter (25 player)
Defeat the bosses of The Plague Quarter of Naxxramas in 25-player mode.
10
Kel'Thuzad's Defeat (10 player)
Defeat Kel'Thuzad in Naxxramas in 10-player mode.
10
The Fall of Naxxramas (10 player)
Defeat every boss in Naxxramas in 10-player mode.
25
Sapphiron's Demise (10 player)
Defeat Sapphiron in Naxxramas 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 Spellweaver's Downfall (25 player)
Defeat Malygos in 25-player mode.
25
Twilight Assist (10 player)
With at least one Twilight Drake still alive, engage and defeat Sartharion the Onyx Guardian in 10-player mode.
10
The Arachnid Quarter (25 player)
Defeat the bosses of The Arachnid Quarter of Naxxramas in 25-player mode.
10
Besting the Black Dragonflight (10 player)
Defeat Sartharion the Onyx Guardian 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 Safety Dance (10 player)
Defeat Heigan the Unclean in Naxxramas without anyone in the raid dying 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 Arachnid Quarter (10 player)
Defeat the bosses of The Arachnid Quarter of Naxxramas in 10-player mode.
10