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Defeat the Stone Guard in Mogu'shan Vaults on Heroic difficulty.

Defeat the Lich King in Icecrown Citadel in 10-player Heroic mode.

Kill every Vile Spirit that spawns before it explodes and then defeat the Lich King in 10-player mode.

Defeat the bosses of The Crimson Hall in Icecrown Citadel in 10-player Heroic mode.

Defeat the Blood Council without anyone in the raid taking more than 23,000 spell damage in a single hit in 10-player mode.

Defeat the bosses of The Plagueworks in Icecrown Citadel in 10-player Heroic mode.

Defeat Professor Putricide without using Regurgitated Ooze on the Abomination in 10-player mode.

Defeat Festergut while none of the players in your raid group ever had 3 stacks of Inoculated in 10-player mode.

Defeat Rotface without a Big Ooze casting Unstable Ooze Explosion in 10-player mode.

Defeat Sindragosa in 10-player mode without any member of your raid receiving more than 5 stacks of Mystic Buffet.

Defeat the first four bosses in Icecrown Citadel in 10-player Heroic mode.

Defeat Lord Marrowgar without any raid member remaining impaled for more than 8 seconds in 10-player mode.

Defeat Deathwing on Normal or Heroic Difficulty in the Dragon Soul raid.

Destroy Deathwing in Dragon Soul on Heroic Difficulty.

Defeat the Spine of Deathwing encounter on Normal or Heroic Difficulty after tricking Deathwing into performing the following roll sequence: Left, Right, Left, Right.