- Gonna Go When the Volcano Blows (25 player)
- Defeat Sartharion the Onyx Guardian without getting hit by Lava Strike in 25-player mode.
The strategy for this achievement is essentially the same as that for the 10-man version.
- Patch 3.2.0 (2009-08-04): Renamed from Heroic: Gonna Go When The Volcano Blows to Gonna Go When the Volcano Blows (25 player).
- Patch 3.0.2 (2008-10-14): Added.