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Defeat the Lich King in Icecrown Citadel in 25-player mode.

Defeat Blood-Queen Lana'thel once as a vampire and again without becoming a vampire in 25-player mode.

Defeat every boss in Icecrown Citadel in 25-player mode.

Defeat the bosses of The Frostwing Halls in Icecrown Citadel in 25-player mode.

Defeat Archavon the Stone Watcher, Emalon the Storm Watcher, and Koralon the Flame Watcher within 60 seconds of each other in 10-player mode.

Defeat every boss in Icecrown Citadel in 10-player Heroic mode.

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

Complete the 10-player raid achievements listed below.

Defeat Algalon the Observer in 10-player mode.

Allow Necrotic Plague to stack to 30 before defeating the Lich King 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 bosses of The Plagueworks in Icecrown Citadel in 10-player Heroic mode.

In Isle of Conquest, disarm 25 bombs.

Defeat the Twin Val'kyr in 3 minutes or less in 25-player mode.

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