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

Defense Protocol Gamma: Drak'Tharon Keep

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

Defeat the Black Knight in the Trial of the Champion on Heroic Difficulty without any player in the group being hit by a ghoul explosion.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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