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

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

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

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

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

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

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

Defeat Skadi the Ruthless in Utgarde Pinnacle on Heroic Difficulty after having killed Grauf from 100% to dead in a single pass.

Defense Protocol Gamma: The Nexus

Defeat The Nexus bosses on Heroic Difficulty.

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

Defeat the bosses in The Halls of Reflection.

Defeat the bosses in Halls of Lightning.

Defeat the bosses in The Pit of Saron.

Defeat the bosses in The Forge of Souls

Defeat the bosses in the Trial of the Champion.

Defeat the bosses in The Oculus.

Defeat the bosses in Caverns of Time: Stratholme.

Defeat the bosses in Utgarde Pinnacle.

Defeat the boss encounters in Halls of Stone.

Defeat the bosses in Gundrak.

Defeat Cyanigosa in The Violet Hold.

Defeat the bosses in Drak'Tharon Keep.

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

Defeat the bosses in Azjol-Nerub.

Defeat the bosses in The Nexus.

Defeat the bosses in Utgarde Keep.