Archaedas

Archaedas's vault
Continue beyond Grimlok through the stone guardians to Archaedas's chamber. Gather everyone at the altar before activating the boss and decide who will collect the statues that awaken during combat. The run ends here after Archaedas falls.

Archaedas
<Ancient Stone Watcher>Elite GiantArchaedas tests whether the group can collect successive awakened statues without letting Ground Tremor disable everyone supporting the tank.
Abilities

Ground Tremor
Stuns nearby enemies, rendering them unable to move or attack for 2 seconds.
Ground Tremor stuns nearby players. Keep healers and ranged attackers apart from the boss's melee group so the stun does not stop the whole group's response to newly awakened statues.

Awaken Earthen Dwarf
Pick up the Earthen Custodian as it awakens and remove it before returning to Archaedas; leaving early statues alive gives later awakenings more attackers to join.

Awaken Earthen Guardians
Gather the Earthen Guardians away from the healer and clear their wave. Melee step away during the guardians' Whirlwind rather than standing among the newly active statues.

Awaken Vault Warder
Have the statue handler collect the Vault Warders immediately. Keep their Trample away from the ranged group while the group finishes the awakened enemies and Archaedas.
Tank- Choose a statue handler before the altar is activated. Hold Archaedas while that player collects new Custodians, Guardians and Vault Warders; if you must handle both, bring the statues into your cleared fighting space rather than toward the healer.
Healer- Stay outside Archaedas's melee group to avoid Ground Tremor and watch the player collecting statues as each wave wakes. Keep clear of the Guardians' Whirlwind and Warders' Trample while maintaining line of sight to the boss tank.
Damage- Clear the early Earthen Custodians and switch to the Guardian wave when it wakes. Keep the statue handler free of accumulated enemies, step away from Whirlwind and follow the group's target when the Vault Warders join.