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Defeat Sinestra in the Bastion of Twilight on Heroic difficulty while in a guild group.

Defeat Cho'gall in the Bastion of Twilight on Heroic difficulty while in a guild group.

Defeat Kel'Thuzad in Naxxramas while killing at least 18 abominations in his chamber while in a guild group.

Complete the Northrend raid achievements listed below while in a guild group.

Defeat Yogg-Saron without the assistance of any Keepers while in a guild group.

Defeat Algalon the Observer while in a guild group.

Defeat Anub'arak in the Trial of the Crusader on Heroic mode while in a guild group.

Defeat Malygos in 3 minutes or less while in a guild group.

Defeat Halion on Heroic mode in The Ruby Sanctum while in a guild group.

With all three Twilight Drakes still alive, engage and defeat Sartharion the Onyx Guardian while in a guild group.

Complete every Warlords of Draenor Challenge Mode dungeon with a rating of Silver or better while in a guild group.

Complete every Warlords of Draenor Challenge Mode dungeon with a rating of Bronze or better while in a guild group.

Complete every Warlords of Draenor Challenge Mode dungeon while in a guild group.

Defeat the Lich King on Heroic mode in Icecrown Citadel while in a guild group.

Purchase all 8 guild bank tabs.