Beta

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

Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 10-player mode.

Enter every portal spawned by Valithria Dreamwalker before healing her to full health in 10-player mode.

Defeat the bosses of The Crimson Hall in Icecrown Citadel in 10-player 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 Professor Putricide without using Regurgitated Ooze on the Abomination in 10-player mode.

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

Defeat Rotface without a Big Ooze casting Unstable Ooze Explosion 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 the Deathbringer before Mark of the Fallen Champion is cast three times in 10-player mode.

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

Claim victory in the Gunship Battle without any raid member visiting the enemy gunship more than twice in 10-player mode.

Defeat Nexus-Prince Shaffar on Heroic Difficulty.

Gain Exalted reputation with the Horde Expedition.

Complete the arena achievements listed below.