Glory of the Icecrown Raider (25 player)

All achievements in this meta can be completed on Normal 25-player difficulty, except those with 'Heroic' in their name — specifically Heroic: Storming the Citadel, Heroic: The Plagueworks, Heroic: The Frostwing Halls, and Heroic: The Crimson Hall — which must be completed on Heroic 25-player difficulty.

These achievements are account-wide, so different characters can be used to complete different achievements across separate lockouts — this is especially useful for 'Once Bitten, Twice Shy', which requires completing the achievement on a character of a specific role or class condition.

Defeat Lord Marrowgar without any player remaining impaled on an ice spike for more than 8 seconds — kill him as quickly as possible to minimize the chance of this happening.

During the Gunship Battle, each player may only board the enemy gunship once for the duration of the encounter — coordinate your raid so no player crosses over more than a single time.

Defeat Rotface without allowing any Big Ooze to cast Unstable Ooze Explosion — focus on managing ooze merges and killing Big Oozes before they can cast.

Upon completing the meta-achievement, the Reins of the Icebound Frostbrood Vanquisher is automatically learned and will appear directly in your mount collection without requiring a mailbox pickup.