XT-002 Deconstructor Strategy Guide – Ulduar (10)

Ulduar XT-002 Deconstructor Raid Guide Featured Image

The hand-crafted “son” of Mimiron, XT-002 Deconstructor patrols the scrapyard of Ulduar, playing with the discarded nuts & bolts left in his father’s wake.

This guide will offer a detailed, step-by-step tutorial on how to break XT-002 Deconstructor’s heart and progress into the depths of Ulduar.

Role Summaries

Phase 1

Phase 2

  • Make sure Boombots and Scrapbots don’t reach the boss or raid
  • Don’t accidentally destroy the boss’s heart if you don’t want to activate Hard Mode

Phase 2

  • Focus on killing Scrapbots and Boombots

Phase 1

  • Most healers should prioritize raid healing during tympanic-tantrum
  • Both tanks will need extra healing during tympanic-tantrum to make sure they always stay at very high health


  • Grab Pummelers and tank them away from the raid during Phase 2.

Phase 1

Phase 2

  • Make the raid aware of the current priority target, either adds or the heart
  • Make your raiders aware of when adds are not being handled
  • Call out for DPS to stop if you are in danger of killing the heart and do not want to do hard mode

Hard Mode


XT-002 Deconstructor

XT-002 throws a tantrum, smashing the ground with its fists, damaging everyone for 10% of their maximum health every second for 8 seconds, alongside dazing everyone hit.

Healers will need to do their best to quickly heal up the entire raid, prioritizing the tanks. This damage is not enough to kill a player by itself, but puts them dangerously close to death from other sources.

A player is charged with divine energy, dealing moderate damage to themselves and all allies within 10-yards of them every second, for 9 seconds.

Anyone with this debuff should be isolated from their raid to avoid overwhelming damage.

A player is charged with dark energy, causing them to explode after 9 seconds. This explosion deals heavy damage to everyone hit by it, as well as pulling in all allies within 12 yards.

This is also handled by making sure the debuffed player stays isolated from their allies.

Hard Mode

Activating Hard Mode buffs the boss with heartbreak, increasing his damage dealt by 15% and his maximum health by 50%.

searing-light now spawns a life-spark, buffed with static-charged. The Life Spark will deal a small amount of Nature damage to the entire raid every 3 seconds. If the fight lasts too long and too many Life Sparks are spawned, this small constant damage can go from being a nuisance to being too much to handle.

gravity-bombs now spawn a void-zone, lingering for 3 minutes and dealing heavy damage to everyone within it.

Players should make sure to immediately get out of void zones.


  • arcing-smash
    • This add attacks with a frontal cleave, requiring tanks to face them away from the raid
  • trample
    • Deals AoE damage to everyone around the add
  • uppercut
    • Knocks the target back
  • scrap-repair
    • The Scrapbot attempts to run to XT-002, healing the boss if they reach him
  • Explode
    • Boombots explode on death, dealing AoE damage to everyone within range

Raid Composition & Preparation

This fight has no specific class or spec requirements, and as long as your group can deal enough damage to avoid being overwhelmed, you should be fine.

You will want 1-3 Healers for this fight, with AoE healers being particularly valuable if your raid is lacking on DPS.

There are no strict requirements for DPS classes or specs here: you simply want a combination of good raid buffs and debuffs, as well as the best players you can muster.

You will want two tanks for this fight: one main-tank to focus on the boss, and one off-tank to hold onto Pummelers spawned in the add phase.

Hard Mode

Hard Mode for XT-002 Deconstructor is activated by killing the heart-of-the-deconstructor during any of the add phases. This will immediately heal the boss to full health, stop adds from spawning, and modify the boss’s abilities.

These modified abilities effectively put the boss on a ticking timer, making the fight harder and harder to manage effectively the longer the fight goes on.

Defeating the boss on Hard Mode adds several items to the loot table; these items are:

The Pull

The boss is pulled by proximity and, when pulled, the gate will close. Make sure everyone runs in for the pull so that no one gets locked out, and no one is too far away from the raid when the boss is activated.

The Fight

xt 002 deconstructor boss phase raid guide

Phase 1

Phase 1 is a fairly simple tank-and-spank phase. Players will be periodically debuffed with searing-light or gravity-bomb. A player with these debuffs will need to make sure they get away from the raid, as anyone close to them will be damaged by these debuffs. Other than that, there is nothing special to consider, and the fight will enter Phase 2 at 75% health.

During this Phase the boss can cast tympanic-tantrum, dealing 80% of every player’s max health as damage over 8 seconds, as well as dazing them. This ability is on a 1-minute cooldown, and the cooldown is restarted each time the phase shifts. This means that high-DPS groups can avoid this mechanic entirely, as long as they can deal 25% of the boss’s health as damage within the 1-minute window.

If the boss does get to throw a tantrum, every healer will need to focus on raid healing. A full channel of this spell will not kill anyone in the raid, but when combined with other sources of damage, such as Pummelers, searing-light, gravity-bombs, and even self-damage like shadow-word-death, this can easily kill raid members.

Phase 2

10 deconstructor arena adds

Phase 2 is often referred to as the “Add Phase”, and this phase is where you will be given the ability to activate Hard Mode. If your raid kills XT-002 Deconstructor’s heart during the Add Phase, Hard Mode will activate for the rest of the fight.

The heart takes double damage from all sources, and any damage dealt to the heart will carry over to the boss, making this the best possible time to burst down the boss. But remember, if you do not want to do this fight on Hard Mode, make sure that your raid knows not to destroy the heart.

During the Add Phase adds will spawn from the various junk piles around the room. Scrapbots and Boombots should be killed at range as fast as possible, without being allowed to reach the raid or boss. Pummelers should be grabbed by the off-tank and held away from the raid. These can be DPSed during this phase, but the heart will generally be the ideal DPS target.

After 20 seconds the boss will return to Phase 1, no longer spawning adds and covering his heart again.

Here are some of the main things that can typically go wrong in this fight:

  • Low DPS causes the boss to overwhelm the raid over time
  • Adds are not handled appropriately, causing cascading effects to wipe the raid
  • Players don’t move out when debuffed, dealing massive damage to everyone instead of just themselves
  • Healers cannot keep up during tympanic-tantrum, leaving the entire raid at low health
  • The heart is unintentionally killed, activating Hard Mode and healing the boss to full health


Congratulations on defeating the XT-002 Deconstructor. Proceed to the teleporter up the stairs and teleport to the Antechamber of Ulduar, finally breaching the gate and walking the first steps of Yogg-Saron’s prison.


About the Author


I love MMOs of all shades, especially the nitty gritty numbers parts of them. You might recognize me from the Shadow Priest discord, otherwise I play a little bit of everything, especially games with support roles available.
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