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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.

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

Defeat the bosses in the Bastion of Twilight while in a guild group.

Defeat Nefarian in Blackwing Descent on Heroic difficulty while in a guild group.

Defeat the bosses in Blackwing Descent while in a guild group.

Defeat the bosses in Throne of the Four Winds while in a guild group.

Defeat the bosses in the Throne of Thunder while in a guild group.

Defeat the bosses in Heart of Fear while in a guild group.

Defeat Nalak, the Storm Lord, on the Isle of Thunder while in a raid with at least 8 guild members.

Defeat Oondasta on the Isle of Giants while in a raid with at least 8 guild members.

Defeat Salyis's Warband in Valley of the Four Winds while in a raid with at least 8 guild members.

Defeat the Sha of Anger in Kun-Lai Summit while in a raid with at least 8 guild members.

Complete the trials of all four Celestials, besting them each in combat on the Timeless Isle, while in a raid with at least 8 guild members.

Complete the heroic Cataclysm dungeon achievements listed below while in a guild group.