Defeat Forgemaster Garfrost in The Pit of Saron on Heroic Difficulty before any player gets 11 stacks of Permafrost.

Defense Protocol Gamma: Ahn'kahet: The Old Kingdom

Defeat the bosses in The Halls of Reflection on Heroic difficulty.

Defeat the bosses in The Halls of Reflection.

Escape from the Lich King in under 6 minutes.

Defeat Bronjahm in The Forge of Souls on Heroic Difficulty with at least 4 Corrupted Soul Fragments alive.

Defeat the bosses in Drak'Tharon Keep.

Defense Protocol Gamma: The Nexus

Defeat the Caverns of Time: Stratholme bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat Eadric the Pure in the Trial of the Champion with his own hammer on Heroic Difficulty.

Defeat The Nexus bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Halls of Lightning bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Drak'Tharon Keep bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the boss encounters in the Halls of Stone on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Utgarde Keep bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat The Oculus bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Gundrak bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Utgarde Pinnacle bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the Azjol-Nerub bosses on Heroic Difficulty while Defense Protocol Beta is active.

Defeat Cyanigosa in The Violet Hold on Heroic Difficulty while Defense Protocol Beta is active.

Defeat the boss encounters in the Halls of Stone on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat The Oculus bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Azjol-Nerub bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Drak'Tharon Keep bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat The Nexus bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Utgarde Keep bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Halls of Lightning bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Ahn'kahet: The Old Kingdom bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Utgarde Pinnacle bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat Cyanigosa in The Violet Hold on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Caverns of Time: Stratholme bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat the Gundrak bosses on Heroic Difficulty while Defense Protocol Alpha is active.

Defeat Zuramat the Obliterator in The Violet Hold on Heroic Difficulty without killing any void sentries.

Kill 100 Risen Zombies in 1 minute in The Culling of Stratholme on Heroic Difficulty.

Defeat Prince Keleseth in Utgarde Keep on Heroic Difficulty without shattering any Frost Tombs.

Defeat Trollgore in Drak'Tharon Keep on Heroic Difficulty before Consume reaches ten stacks.

Defeat Krik'thir the Gatewatcher in Azjol-Nerub on Heroic Difficulty while Watcher Gashra, Watcher Narji, and Watcher Silthik are still alive.

Defeat Gal'darah in Gundrak on Heroic Difficulty and have 5 unique party members get impaled throughout the fight.

Defeat Ley-Guardian Eregos in The Oculus on Heroic Difficulty without anyone in your party using an Amber Drake.

Defeat Anomalus in The Nexus on Heroic Difficulty without destroying any Chaotic Rifts.

Defeat the bosses in Ahn'kahet: The Old Kingdom.

Defeat Jedoga Shadowseeker in Ahn'kahet on Heroic Difficulty without killing any Twilight Volunteers.

Defeat Elder Nadox in Ahn'kahet on Heroic Difficulty without killing any Ahn'kahar Guardians.

Defeat Sjonnir the Ironshaper in the Halls of Stone on Heroic Difficulty and kill 5 Iron Sludges during the encounter.

Engage King Dred in Drak'Tharon Keep on Heroic Difficulty and slay 6 Drakkari Gutrippers or Drakkari Scytheclaw during his defeat.

Force Svala Sorrowgrave to kill a Scourge Hulk on Heroic Difficulty in Utgarde Pinnacle.

Defeat Hadronox in Azjol-Nerub on Heroic Difficulty before he webs the top doors and prevents more creatures from spawning.

Defeat the Maiden of Grief in the Halls of Stone on Heroic Difficulty in 1 minute or less.

Defeat General Bjarngrim in the Halls of Lightning on Heroic Difficulty while he has a Temporary Electrical Charge.

Defeat Cyanigosa in The Violet Hold without using Defense Control Crystals and with Prison Seal Integrity at 100% while in Heroic Difficulty.

Defeat Gal'darah in Gundrak on Heroic Difficulty while under the effects of Eck Residue.

Defeat Moorabi in Gundrak on Heroic Difficulty while preventing him from transforming into a mammoth at any point during the encounter.

Defeat Slad'ran in Gundrak on Heroic Difficulty without getting snake wrapped.

Defeat Anub'arak in Azjol-Nerub on Heroic Difficulty in 4 minutes or less.

Defeat Keristrasza in The Nexus on Heroic Difficulty without allowing Intense Cold to reach more than two stacks.

Defeat The Nexus bosses on Heroic Difficulty.

Defeat Grand Magus Telestra in The Nexus on Heroic Difficulty after having killed her images within 5 seconds of each other during both splits.

Defeat Novos the Summoner in Drak'Tharon Keep on Heroic Difficulty without allowing any undead minions to reach the floor.

Defeat the bosses in The Nexus.