Destruction's Depths

Objectives

 * Speak to Jalis Ironhammer when you are ready to face this evil. (disappears from Quest Log after speaking to Jalis)
 * Find and reclaim the Central Transfer Chamber.
 * Take command of the golems and find the missing Asuran patrol.
 * Rendezvous with the Ebon Vanguard.
 * Clear a path into the depths with the Ebon Vanguard.
 * Continue deeper into the caverns.
 * Fight beside the Norn as they hold off the Destroyers.
 * Travel to the Central Transfer Chamber via the Asura Gate.
 * Clear the Central Transfer Chamber of Destroyers.

Obtained from
 * Automatically added upon completing Heart of the Shiverpeaks
 * After first completion, can be obtained from:
 * Jalis Ironhammer in Battledepths
 * Scrying Pool in Hall of Monuments (select "I seek guidance" option)

Requirements
 * Heart of the Shiverpeaks (quest)

Follow up
 * A Time for Heroes

Walkthrough
Speak to Jalis Ironhammer to be transported into Destruction's Depths.

On each level of this quest, you will find three deactivated G.O.L.E.M. 2.0s. Activating them costs 15 energy each. They can be switched between three combat modes: Melee, Ranged, and Defense. They will follow whoever activated them or last changed their combat mode, although "follow" is a bit inaccurate - they will actually stand about half an aggro bubble in front of you when not moving. If their health is depleted, they will not be destroyed, but will simply shut down; they can be reactivated for another 15 energy.

Level 1
This level is fairly straightforward, just follow the quest markers to meet up with the Asuran and Ebon Vanguard forces. The final chamber will be filled with destroyers and Vanguard Warriors fighting each other. While it is possible to pull out the destroyer mobs and eventually kill them all, it's much easier to simply run through them all to the portal.

Level 2
The dryders on this level will fight the destroyers, so let them finish each other off wherever possible before moving in. Follow the marker to meet up with the Norn forces. Here you will have to fight off a fairly large destroyer assault. First, three groups of three destroyers will attack from the northern approaches. When these are dead, you will have a short break before the second wave begins spawning from both the northeast and southwest. Staying in the center and trying to defend on both fronts at the same time is usually suicidal. Instead, move away from the quest marker toward either of the destroyer spawn points, placing your party at least an aggro-bubble-radius away from the marker. The final group on both sides contains a Destroyer of Earth, and on the north side it also contains an Avatar of Destruction. After finishing off the destroyers on your side, you will see all the destroyers from the other side clumped up at the quest marker. It is possible to separate this mob into individual groups, although their short pulling distance can make it difficult.

An alternative strategy is to get on the ice bridge and position the golems at the end of the bridge. Let the golems be "killed" by the destroyers, and the destroyers will be permanently body blocked. Saved from the destroyers' considerable melee pressure, you should have no trouble taking them out with spells and ranged attacks.

When all the destroyers are dead, follow Olaf as he leads you out of the chamber. After a couple more destroyer groups, you will meet the last of your allies, the newly-transformed Stone Dwarves of Deldrimor. Past them is the Asura Gate that leads to the Central Transfer Chamber. You must wait for the dialogue to complete before the gate will actually work, but if you wait too long, a very large group of around 20 destroyers will appear and attack the dwarves.

Level 3
From the platform where you spawn, stairs lead down to landings on both right and left, and then more stairs lead down to the main floor where the Disc of Chaos awaits. At the bottom of all four flights of stairs is a group of destroyers and a Destroyer of Lives. Entering the main floor will trigger a fifth group of destroyers to come up from the south. All the destroyers must be killed to complete the quest.

Kill off all the destroyers you can reach without aggroing the Disc. When you are ready, pull the Disc over to the stairs so you don't trigger the last group of destroyers behind it. The Disc is a powerful fire elementalist with extremely high health and armor, but since all three of its skills are spells, keeping it dazed can mostly shut it down. Even so, it will take a while to deplete all of the Disc's health. When it is finally dead, clean up the remaining destroyers. A cutscene will play, and the party will appear in the reclaimed Central Transfer Chamber.

NPCs

 * Norn
 * 20 Olaf Olafson
 * 20 Olrun Olafdottir
 * 20 Sif Shadowhunter
 * 20 Egil Fireteller
 * Dwarves
 * 24 King Jalis Ironhammer
 * Ebon Vanguard
 * 20 Captain Langmar
 * 20 Jenn Valefield
 * 20 Chance Redding
 * Asura
 * 20 Renk
 * 20 Sokka
 * 20 Oola
 * 20 G.O.L.E.M. 2.0 (Three will be present at the start of every level)

Monsters

 * Destroyers
 * 28(30) Destroyer of Bones
 * 28(30) Destroyer of Flesh
 * 28(30) Destroyer of Sinew
 * 28(30) Destroyer of Deeds
 * 28(30) Destroyer of Hordes
 * 28(30) Destroyer of Hope
 * 28(30) Destroyer of Thoughts
 * 28(30) Destroyer of Lives
 * Dragons
 * 20 Chromatic Drake (level 2)
 * Dryders
 * 24 Bloodtaint Dryder (level 1)
 * 24 Dreadgaze Dryder (level 1)
 * 24 Soulfire Dryder (level 1)
 * 24 Terrorbond Dryder (level 1)
 * Elementals
 * 20 Icy Stalagmite (levels 1 and 2)
 * 20 Shattered Elemental (levels 1 and 2)
 * 20 Whirling Wisp (levels 1 and 2)
 * Nightmares
 * 20 Scourge Vaettir (leves 1 and 2)
 * 20 Shadow Vaettir (levels 1 and 2)
 * 20 Mist Vaettir (levels 1 and 2)

Bosses

 * Destroyers
 * 28 Avatar of Destruction (Dervish) (Onslaught) - While fighting alongside the Norn
 * 28 Avatar of Destruction (Warrior) (Battle Rage) - Near the Vanguard

Boss-like foes

 * Destroyers
 * 30(32) Disc of Chaos - Final chamber

Dialogues
Briefing from the Scrying Pool.