Heroic: Halls of Lightning Guild Run is a Cataclysm guild raid achievement. It is earned by defeating the leaders of the Halls of Lightning on Heroic difficulty while in a guild group.
Patch changes
Patch 4.0.3a (2010-11-23): Added.
See also
[Heroic: Halls of Lightning]- Guild Northrend Dungeon Hero (Alliance)
- Guild Northrend Dungeon Hero (Horde)