I Could Say That This Cache Was Rare (10 player)
Defeat Hodir before he shatters his rare cache in 10-player mode.
10
Heartbreaker (10 player)
Defeat XT-002 Deconstructor after destroying his heart in 10-player mode.
10
Orbital Devastation (10 player)
Defeat Flame Leviathan with at least 2 Orbital Defense Systems active in 10-player mode.
10
Nuked from Orbit (10 player)
Defeat Flame Leviathan with at least 3 Orbital Defense Systems active in 10-player mode.
10
Orbit-uary (10 player)
Defeat Flame Leviathan with all 4 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
I Choose You, Runemaster Molgeim (25 player)
Defeat the Assembly of Iron with Runemaster Molgeim as the last member alive in 25-player mode.
10
One Light in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of one or fewer Keepers in 25-player mode.
10
The Secrets of Ulduar (25 player)
Defeat every boss in Ulduar in 25-player mode.
25
Three Lights in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of three or fewer Keepers in 25-player mode.
10
Two Lights in the Darkness (25 player)
Defeat Yogg-Saron with the assistance of two or fewer Keepers in 25-player mode.
10
The Descent into Madness (25 player)
Defeat the bosses of The Descent into Madness area of Ulduar in 25-player mode.
10
Knock, Knock, Knock on Wood (25 player)
Defeat Freya while leaving all 3 Elders alive in 25-player mode.
10
Knock on Wood (25 player)
Defeat Freya while leaving at least 1 Elder alive in 25-player mode.
10
Knock, Knock on Wood (25 player)
Defeat Freya while leaving at least 2 Elders alive in 25-player mode.
10
Lose Your Illusion (25 player)
Defeat Thorim while Sif is present in 25-player mode.
10
Siffed (25 player)
Force Thorim to enter the arena while Sif is present 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
Orbital Devastation (25 player)
Defeat Flame Leviathan with 2 Orbital Defense Systems active in 25-player mode.
10
Orbit-uary (25 player)
Defeat Flame Leviathan with 4 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
One Light in the Darkness (10 player)
Defeat Yogg-Saron with the assistance of one or fewer Keepers in 10-player mode.
10
Three Lights in the Darkness (10 player)
Defeat Yogg-Saron with the assistance of three or fewer Keepers in 10-player mode.
10
Two Lights in the Darkness (10 player)
Defeat Yogg-Saron with the assistance of two or fewer Keepers in 10-player mode.
10
In His House He Waits Dreaming (10 player)
Experience all 3 visions of Yogg-Saron's mind in 10-player mode.
10
I Choose You, Steelbreaker (10 player)
Defeat the Assembly of Iron with Steelbreaker as the last member alive in 10-player mode.
10
Drive Me Crazy (10 player)
Defeat Yogg-Saron without any raid member going insane in 10-player mode.
10
The Descent into Madness (10 player)
Defeat the bosses of The Descent into Madness area of Ulduar in 10-player mode.
10
The Secrets of Ulduar (10 player)
Defeat every boss in Ulduar in 10-player mode.
25
The Keepers of Ulduar (10 player)
Defeat the Keeper bosses of Ulduar in 10-player mode.
10
Con-speed-atory (10 player)
Defeat Freya within 20 minutes of the first creature you kill in the Conservatory of Life in 10-player mode.
10
Knock on Wood (10 player)
Defeat Freya while leaving at least 1 Elder alive in 10-player mode.
10
Knock, Knock, Knock on Wood (10 player)
Defeat Freya while leaving all 3 Elders alive in 10-player mode.
10
Knock, Knock on Wood (10 player)
Defeat Freya while leaving at least 2 Elders alive in 10-player mode.
10
Lose Your Illusion (10 player)
Defeat Thorim while Sif is present 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
Siffed (10 player)
Force Thorim to enter the arena while Sif is present in 10-player mode.
10
I Have the Coolest Friends (10 player)
Defeat Hodir without any friendly NPC dying in 10-player mode.
10
Getting Cold in Here (10 player)
Defeat Hodir without any raid member having more than 2 stacks of Biting Cold in 10-player mode.
10
Cheese the Freeze (10 player)
Defeat Hodir without any raid member being hit by Flash Freeze in 10-player mode.
10
Staying Buffed All Winter (10 player)
Possess the effects of Toasty Fire, Storm Power and Starlight at the same time 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
Disarmed (10 player)
Destroy both of Kologarn's arms and then Kologarn himself within 12 seconds in 10-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 Siege of Ulduar (10 player)
Defeat the bosses of The Siege area of Ulduar in 10-player mode.
10
Must Deconstruct Faster (10 player)
Defeat XT-002 Deconstructor in 205 seconds 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
Stokin' the Furnace (10 player)
Defeat Ignis the Furnace Master in 4 minutes 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 Keepers of Ulduar (25 player)
Defeat the Keeper bosses of Ulduar in 25-player mode.
10
Con-speed-atory (25 player)
Defeat Freya within 20 minutes of the first creature you kill in the Conservatory of Life in 25-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
Staying Buffed All Winter (25 player)
Possess the effects of Toasty Fire, Storm Power and Starlight at the same time 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
The Siege of Ulduar (25 player)
Defeat the bosses of The Siege area of Ulduar 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
Stokin' the Furnace (25 player)
Defeat Ignis the Furnace Master in 4 minutes 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
Shutout (25 player)
Defeat Flame Leviathan without causing a System Shutdown in 25-player mode.
10
The Spellweaver's Downfall (10 player)
Defeat Malygos in 10-player mode.
10
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
Twilight Assist (25 player)
With at least one Twilight Drake 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
Twilight Duo (25 player)
With at least two Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian 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
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
Sapphiron's Demise (25 player)
Defeat Sapphiron in Naxxramas in 25-player mode.
10