Defeat the Devourer of Souls in The Forge of Souls on Heroic Difficulty without him successfully casting Phantom Blast.

Defeat the bosses in Halls of Lightning.

Defeat the bosses in Drak'Tharon Keep.

Defense Protocol Gamma: Utgarde Keep

Clear the hallway before Scourgelord Tyrannus in The Pit of Saron on Heroic Difficulty without anyone taking icicle damage on the first try.

Defeat the bosses in the Trial of the Champion.

Defeat the bosses in The Pit of Saron.

Defeat the bosses in Utgarde Pinnacle.

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

Defeat the bosses in The Forge of Souls

Defense Protocol Gamma: Drak'Tharon Keep

Defeat the bosses in The Nexus.

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

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

Defense Protocol Gamma: The Nexus

Defeat Cyanigosa in The Violet Hold.

Defeat the bosses in Gundrak.

Defeat the boss encounters in Halls of Stone.

Defeat the bosses in Utgarde Keep.

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

Defeat Anub'arak in Azjol-Nerub on Heroic Difficulty in 4 minutes 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 Gal'darah in Gundrak on Heroic Difficulty while under the effects of Eck Residue.

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

Defeat Ley-Guardian Eregos in The Oculus on Heroic Difficulty within 20 minutes of Drakos the Interrogator's death.

Defeat the Infinite Corruptor in The Culling of Stratholme on Heroic Difficulty.

Defeat Ichoron in the Violet Hold on Heroic Difficulty without allowing any Ichor Globules to merge.

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

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

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

Defeat the Caverns of Time: Stratholme bosses on Heroic Difficulty.

Defeat the bosses in The Oculus.

Defeat The Oculus bosses on Heroic Difficulty.

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

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

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

Defeat the Utgarde Keep bosses on Heroic Difficulty.

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

Defeat King Ymiron in Utgarde Pinnacle on Heroic Difficulty without anyone in the party triggering Bane.

Defeat Skadi the Ruthless in Utgarde Pinnacle on Heroic Difficulty within 3 minutes of starting the gauntlet event.

Defeat the bosses in Caverns of Time: Stratholme.

Defeat the bosses in Azjol-Nerub.