The Twilight Zone (25 player)
With all three Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian in 25-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
Twilight Duo (25 player)
With at least two Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian 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
Besting the Black Dragonflight (25 player)
Defeat Sartharion the Onyx Guardian in 25-player mode.
25
The Spellweaver's Downfall (25 player)
Defeat Malygos in 25-player mode.
25
The Fall of Naxxramas (25 player)
Defeat every boss in Naxxramas in 25-player mode.
50
The Arachnid Quarter (25 player)
Defeat the bosses of The Arachnid Quarter of Naxxramas 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
Momma Said Knock You Out (25 player)
Defeat Grand Widow Faerlina in Naxxramas without dispelling or preventing frenzy 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 Military Quarter (25 player)
Defeat the bosses of The Military Quarter of Naxxramas in 25-player mode.
10
The Construct Quarter (25 player)
Defeat the bosses of The Construct Quarter of Naxxramas in 25-player mode.
10
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
Twilight Duo (10 player)
With at least two Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian 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
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
The Hundred Club (10 player)
Defeat Sapphiron in Naxxramas without any member of the raid having a frost resist value over 100 in 10-player mode.
10