World of Warcraft: Cataclysm Database
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Achievement

Onyxia's Lair (25 player)

tooltip
Onyxia's Lair (25 player)
Onyxia's Lair (25 player)
Lich King Raid
 
Defeat Onyxia in 25-player mode.
 
Criteria:
- Onyxia
additional info
factionA H
achievement points10
criteria
Onyxia