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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.

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.

Defeat the bosses in the Siege of Orgrimmar while in a guild group.

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

Defeat Ascendant Lord Obsidius on Heroic difficulty while in a guild group.

Defeat Erudax in Grim Batol on Heroic difficulty while in a guild group.

Defeat Siamat, Lord of the South Wind in the Lost City of the Tol'vir in Heroic difficulty while in a guild group.

Defeat Ozumat in Throne of the Tides on Heroic difficulty while in a guild group.

Defeat High Priestess Azil in the Stonecore on Heroic difficulty while in a guild group.

Defeat Daakara in Zul'Aman on Heroic difficulty while in a guild group.

Defeat Nexus-Prince Shaffar on Heroic Difficulty while in a guild group.

Defeat Quagmirran on Heroic Difficulty while in a guild group.

Defeat Aeonus on Heroic Difficulty while in a guild group.

Defeat Asaad in the Vortex Pinnacle on Heroic difficulty while in a guild group.