This page covers healer-focused strategies for the Operation: Mechagon dungeon. While it's tailored for healers, other roles may also find the information useful. If you have any suggestions or feedback, you can leave a comment below or tweet @PrestonDvorak.

This guide has been updated and maintained based on my own experiences as well as Dungeon Journal information. I'll continue to update it as-needed.

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 Bosses

Below are guides for the bosses in Operation: Mechagon, including their abilities, healer notes, and addon settings.

King Gobbamak

• During Rumble, avoid the impact locations of Cave In.
  • All players take moderate damage over time for the duration of Rumble.
• At 100% Energy, stand within 8-yards of the tank to split the damage dealt by Charged Smash.
  • All players hit will be affected by Electrical Charge, taking light damage over time and dealing damage to players within 6-yards.
    • While affected, move near a Stolen Tech (detailed below) to activate it and remove the debuff.
• Periodically summons Scrapbone Grunters from the nearby caves.
  • These target random players with Rampaging.
• Stolen Tech
  • Activating Stolen Tech with Electrical Charge helps keep the Scrapbone Grunters under control. 
  • Stolen Scrapbot
    • Thrashes nearby Grunters.
  • Stolen Shock Coil
    • Zaps nearby Grunters.

 Healing Notes

• Pre-heal before and use Cooldowns on Rumble.

 Debuffs to Track

• Minor: Tainted Blood

 Addons

• Useful addons will be added closer to release.

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Gunker

• The tank should always stay in melee range of Gunker to avoid Sludge Bolt being cast.
• Most of Gunker's abilities leave Toxic Goop behind.
  • Touching Toxic Goop applies Gooped (dispel, disease), incapacitating the affected player and dealing light damage over time.
    • Gooped must be destroyed by other players or dispelled to free the trapped player.
• Squirt Bots roam the area cleansing Toxic Goop with Sanitizing Spray.
  
  • These can also be affected by Gooped (dispel, disease) and should be freed whenever possible.
• Toxic Fumes deals light damage over time to all players for the duration of the encounter.
• Avoid the Toxic Waves that emanate out in all directions.
• Avoid the impact locations of Splatter.
  • This will always apply Gooped (dispel, disease) to one Squirt Bot.
• Coalesce pulls all players and Toxic Goop towards Gunker.

 Healing Notes

• Be aware of players that are Gooped (dispel, disease) to heal or dispel them.

 Debuffs to Track

• Major: Gooped (dispel, disease)

 Addons

• Useful addons will be added closer to release.

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  Trixie and Naeno

This encounter consists of two enemies that do not share a health pool.

• Trixie "The Tech" Tazer
  • Periodically moves to a new location with Electric Slide.
  • Interrupt Taze to prevent damage on random players.
  • When targeted by Mega Taze, stand in a Smoke Cloud to prevent the damage over time.
  • Jump Starts Naeno's Mechacycle.
  • Upon death, buffs Naeno with Turob Boost causing his attacks to deal moderate damage to all players.
• Naeno Megacrash
  • Don't be in front of the boss when he casts Bolt Buster.
  • Avoid the targeted location of Roadkill.
  • While piloting the Mechacycle:
    • Don't stand between Naeno and the player targeted by Pedal to the Metal.
    • Avoid Naeno during Burnout.
      • This leaves behind a Smoke Cloud.
  • Upon death, it's likely Naeno will buff Trixie,but there's currently no information in the Dungeon Journal.

 Healing Notes

• Players targeted by Pedal to the Metal will take a heavy amount of damage upon impact.
• Players targeted by Mega Taze will take critical damage over time if they fail to make it to a Smoke Cloud.

 Debuffs to Track

• Major: Pedal to the Metal, Mega Taze
• Minor: Taze

 Addons

• Useful addons will be added closer to release.

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HK-8 Aerial Suppression Unit

Stage One - Fire At Will!

• HK-8 is not attackable during this stage.
• Avoid the impact location of Cannon Blast.
• The Reinforcement Relay periodically warps in reinforcements.
  • Tank Buster MK1
    • The tank will be dealing with Wreck.
    • Targets random players with Fulminating Zap, dealing heavy damage over time.
  • Walkie Shockie X1
    • Stay at least 5-yards away from these to avoid damage from Static Discharge.
      • Avoid the Clinging Static fields left behind.
    • At 0% Energy, stay at least 6-yards away from these to avoid the fatal damage from Self-Destruct.

Stage Two - Annihilation!

• HK-8 moves to an Overcharge Station and begins channeling Annihilation Ray.
  • Avoid the beam location.
  • Deals light damage to all players.
  • When the channel ends after 1.5-minutes, Annihilation Blast deals fatal damage to all players.
• Players must Hack the Overcharge Station to cause HK-8 to go Haywire.
• Avoid the Vent Blasts to avoid being stunned.
• Avoid the Sentry Array beams as they rotate around the area, players hit will be teleported by Anti-Tresspassing Teleport.
• Avoid the Sentry Bots as they move around the area, players hit will be teleported by Anti-Tresspassing Teleport.

 Healing Notes

• The tank may need additional healing or an external defensive cooldown when affected by Wreck.
• Players targeted by Fulminating Zap will need heavy healing over time.

 Debuffs to Track

• Major: Fulminating Zap, Wreck
• Minor: Vent Blast

 Addons

• Useful addons will be added closer to release.

Tussle Tonks

• The Platinum Pummeler
  • Protected by 3-stacks of Platinum Plating, reducing damage taken by 33% per stack.
    • Stacks can be removed using the Piston Smashers around the arena.
  • Don't stand in front of the boss to avoid Whirling Edge.
  • Avoid the mines laid by Lay Mine.
• Gnomercy 4.U.
  • Charges random players with Foe Flipper, launching all players within 6-yards into the air.
  • During Vent Jets, don't stand in front of the boss.
    • All players will be taking moderate damage over time.
  • Targets random players with Maximum Thrust, knocking back all players in its path.
    • When possible, aim this towards the arena wall to stun the boss.
• Tussle Tonk Arena
  • Stay at least 4-yards away from Piston Smashers to avoid the extra damage and stun.
  • Stay at least 2-yards away from Buzz Saws to avoid the extra damage.

 Healing Notes

• Players targeted by Maximum Thrust can be knocked into other mechanics.

 Debuffs to Track

• Minor: Maximum Thrust

 Addons

• Useful addons will be added closer to release.

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K.U.-J.0.

• The tank will steadily gain stacks of Blazing Chomp (dispel, magic).
  • When dispelled, this deals damage to all players based on the number of stacks.
  • In general, this should be dispelled around 2-3 stacks to keep damage manageable.
• Avoid the impact locations of Air Drops.
  • The resulting Junk Bombs will explode when hit by Explosive Leap or Venting Flames.
• When targeted by Explosive Leap, move at least 8-yards away from other players and Junk Bombs.
• During Venting Flames, break line of sight on the boss to prevent the critical damage dealt.

 Healing Notes

• Be sure all players are topped off before dispelling Blazing Chomp (magic).

 Debuffs to Track

• Major: Blazing Chomp (dispel, magic), Explosive Leap

 Addons

• Useful addons will be added closer to release.

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Machinist's Garden

• Head Machinist Sparkflux
  • Avoid the impact locations of Discom-BOMB-ulator (dispel, magic).
• Garden Gadgets
  • Avoid the fire from Hidden Flame Cannon.
  • Avoid the Self-Trimming Hedge blades bouncing around the area.
  • Inconspicuous Plant
    • Targets random players with Blossom Blast, dealing light damage over time.
    • Upon death, releases an Oil Fountain.
      • If this contacts fire from a Hidden Flame Cannon, avoid the impact locations of Roaring Flame.

 Healing Notes

• This fight can become hectic with all the mechanics that need to be dodged, be aware of players that end up out of range.

 Debuffs to Track

• Major: Discom-BOMB-ulator
• Minor: Blossom Blast

 Addons

• Useful addons will be added closer to release.

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  King Mechagon

• • •  

Stage One - Aerial Unit R-21/X

• The tank will be dealing with Pulse Blast.
• Avoid the Plasma Orbs scattered around the area.
  • Stay at least 6-yards away from them during Recalibrate to avoid the burst of damage.
• Avoid the space between Mechagon and the player targeted by Giga-Zap.
  • Any players hit will take moderate damage over time.
• During Take Off!, stay at least 8-yards away from Mechagon.
  • Once in the air, Cutting Beam deals moderate damage to any players beneath Mechagon as well as light damage over its duration to all players.

Stage Two - Omega Buster

• Plasma Orbs and Recalibrate continue in this stage.
• Giga-Zap now targets three players.
• The tank should always stay in melee range of Mechagon to prevent Protocol: Ninety-Nine from dealing heavy damage to all players.
• Run away from the location of the Magneto-Arm to reduce damage taken.

 Healing Notes

• Use cooldowns as needed during Cutting Beam.
• Use cooldowns during Magneto-Arm.

 Debuffs to Track

• Minor: Giga-Zap

 Addons

• Useful addons will be added closer to release.

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 Trash Mobs

Below are notes for the trash mobs in Operation: Mechagon. Operation: Mechagon has a relatively linear layout. The trash below is ordered as if you're completing the bosses in the order they're listed above.

• Trash mob information will be added when I've had the chance to complete the dungeon.

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 Trash Debuffs to Track

• Trash mob debuff information will be added when I've had the chance to complete the dungeon.

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 Trash Addons

• Useful addons will be added closer to release.

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 Mythic+ Notes

In this section you'll find notes about certain interactions bosses and trash mobs have with the Mythic+ difficulty increase or certain affixes that make them more troublesome than normal.

• Mythic+ notes will be added if a Mythic+ version of the instance becomes available.

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