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Defeat Sartharion the Onyx Guardian in 25-player mode.

Defeat Harbinger Skyriss on Heroic Difficulty.

Defeat Harbinger Skyriss.

Defeat Pathaleon the Calculator on Heroic Difficulty.

Defeat Pathaleon the Calculator.

Defeat Warp Splinter on Heroic Difficulty.

Defeat Warp Splinter.

Complete the Northrend Heroic dungeon achievements listed below.

Defeat the Ahn'kahet: The Old Kingdom bosses on Heroic Difficulty.

Defeat the Drak'Tharon Keep bosses on Heroic Difficulty.

Defeat the dungeon and raid bosses listed below.

Complete the classic raid achievements listed below.

Defeat C'Thun.

Defeat Ossirian the Unscarred.

Defeat Bloodlord Mandokir in Zul'Gurub on Heroic Difficulty without killing Ohgan.