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Calefactor

Fire Stream

Tank: The Calefactor channels a frontal stream of fire. Face the automaton away from the group and hold block through the channel.

Flame Line

All: The Calefactor projects persistent lines of fire along the ground. Step out of fire trails immediately to avoid severe burn damage.

Capacitor

Lightning Barrage

All: The Capacitor channels a high-damage shock projectile barrage targeting random players. Interrupt the channel promptly and focus down the Capacitor.

Shock Charge

All: Pulsing electrical circles form beneath players. Spread out and avoid overlapping damage circles until the charge expires.

Dissector

Whirling Blades

Tank: The Dissector spins rapidly with bladed appendages, dealing heavy physical damage and applying a bleed. Hold block and keep the Dissector turned away from the group.

Cleaving Lunge

Tank: The Dissector lunges with a heavy frontal cleave that causes massive physical trauma. Maintain active block.

Ruptured Centurion

Steam Vent

Tank: The Centurion vents superheated steam in a wide frontal cone. Point the Centurion away from allies and maintain block.

Spin Cleave

All: The Centurion performs a 360-degree rotating hammer swing. Melee players must step out of range or block to prevent heavy physical damage and knockdown.

Hunter-Killer Negatrix & Positrox

Boss Separation and Tank Swap Protocol: Two tanks hold Negatrix and Positrox on opposite sides of the room (at least 25 meters apart). If the bosses get close, an electrical tether grants them 90% damage mitigation and massive damage buffs. Each boss stacks an escalating elemental charge on its active tank; at 5-6 stacks, tanks must coordinate and swap bosses across the arena without bringing the bosses into tether range.

Static Tether Separation

All: The two verminous fabricants must remain separated by at least 25 meters. If brought together, an electrical tether forms between them, granting near-invulnerability and enraging their attacks. Keep bosses on opposite sides of the chamber.

Polar Inversion Swap

Tank: Each boss continuously applies stacking elemental overload debuffs to its tank. At 5 to 6 stacks, call out for a tank swap and cross the arena along opposite perimeters to trade bosses without letting them tether.

Fabricant Spheres

Dps: Refabricated Spheres and Ruined Factotums spawn continuously. Burn down Spheres immediately before they project defensive barrier shields onto the bosses.

Healer: Help interrupt Factotums channeling lightning orbs, and maintain area healing on both sides of the arena during add spawns.

Shock Puddles and Darts

All: The bosses shoot high-velocity poison darts and scatter pulsing shock pools across the floor. Dodge roll when targeted by darts and avoid standing in electrical floor puddles.

Pinnacle Factotum

Balcony Jump and Conduit Assignments: Designate a 4-player balcony team (typically 1 off-tank or 1 healer and 3-4 DPS) to take the steam jump pads up to the balconies when Pinnacle Factotum enters the conduit overload phase. The balcony team must eliminate upstairs factotums and disable energy conduits before the downstairs team suffocates in superheated steam.

Conduit Overload Steam

All: Pinnacle Factotum vents lethal superheated steam across the bottom floor while electrifying the arena. The assigned balcony team must immediately take jump pads upstairs to smash the conduits, while the ground team stacks tightly for emergency heals.

Uppercut and Drain

Tank: The boss winds up a colossal mechanical uppercut that knocks the tank across the arena if not blocked, followed by a resource drain channel. Hold block firmly and face him away from the group.

Arcing Shock and Spin

All: Pinnacle Factotum spins and discharges bouncing electrical sparks across the arena. Spread out slightly to avoid catching multiple bouncing sparks and block incoming projectiles.

Shadow Clones

Tank: Shadow shades of the Factotum spawn at health thresholds. The off-tank must taunt and hold shades, pointing their heavy frontal cleaves away from allies.

Dps: Cleave down shadow shades quickly before they overwhelm the tanks with overlapping cleaves.

Archcustodian

Shock Trap Guiding and Burn Windows: Archcustodian possesses an impenetrable 99% damage reduction shield while walking along the conveyor track. Guide the boss into active floor shock traps, which stuns him and drops the shield for a 10-15 second burst DPS window. Coordinate Ultimates and damage potion cooldowns exclusively for trap stun windows.

Invulnerable Barrier and Shock Traps

All: Archcustodian is shielded and takes virtually no damage while moving. Lead the boss directly into glowing shock traps on the path. When stunned in a trap, his barrier drops; unleash all offensive Ultimates and burst damage during this vulnerable window.

Sweeping Concussion Lasers

All: Archcustodian sweeps rotating lasers and shockwaves down the corridor. Step between beam gaps or jump over shock pulses while maintaining group movement.

Fabricant Swarms

Tank: Fabricant spiders and spheres spawn from side vents along the hallway. Chain and gather adds onto the boss's path so they melt to passive cleave.

Dps: Focus down spheres and spiders ahead of the group to keep the runway clear for guiding the boss into traps.

The Refabricated Committee

Committee Balance and Burn Order: Three Factotums (Reactor, Reducer, and Reclaimer) must be held separated by two or three tanks. When any boss hits 0% health, it does not die; it enters a stasis reboot phase that drastically enrages the remaining bosses. Balance group damage across all three bosses, and execute them in close succession (typically Reclaimer first, then Reducer and Reactor).

Reclaimer Overcharge

All: Reclaimer summons overloading shock orbs that tether players and channels lightning bolts across the arena. Interrupt the channel promptly and destroy or line-of-sight the overcharge orbs.

Reactor Flame Surge

Tank: Reactor vents continuous flamethrower cones and drops molten slag under the tank. Keep Reactor pointed away from the group and step out of burning ground.

Healer: Maintain heavy healing over time on the Reactor tank to counter intense ticking flame damage and burning status effects.

Reducer Crushing Cleave

Tank: Reducer delivers crushing physical cleaves that inflict severe healing debuffs (Major Defile). Hold active block and keep defensive cooldowns rolling.

Stasis Reboot Enrage

Dps: When any Committee member reaches 0% health, it enters a reboot stasis while the surviving bosses enrage with accelerating room-wide elemental pulses. Swiftly burst down the remaining bosses before the enrage wipe timer finishes.

Healer: Push burst group heals and defensive Ultimates during reboot phases as arena-wide elemental damage spikes dramatically.

Assembly General

Hard Mode: Activate the Terminal Console beside the entrance platform in the Core Assembly before engaging the Assembly General (Veteran difficulty only; achievement: Halls of Fabrication Difficult Mode).

Terminal Assignments and Platform Pacing: Pre-assign two players to handle upper platform terminal consoles during boss retreat phases (85%, 65%, 45%, 25%). Main tank anchors boss on the center floor platform, facing away from group. Off-tank immediately grabs Ruptured Centurions. When meteor callouts occur, enforce wide group spreading to avoid splash overlaps.
Hard Mode Meteor Spread and Terminal Speed: On Hard Mode, terminal puzzles have strict time limits before the room ventilates with lethal poison gas, meteor strikes leave permanent fiery craters, and seeker projectiles deal lethal burst damage. Enforce strict positioning discipline and rapid add burns.

Seeker Projectiles and Meteors

All: Assembly General discharges tracking shock orbs and targets players with flaming meteors. Spread out across the arena so meteors do not overlap damage circles on teammates, and roll dodge or block incoming seeker projectiles.

Colossus Uppercut and Propulsion

Tank: The boss performs a massive uppercut that sends the tank flying across the floor if not blocked, followed by Energy Propulsion venting out behind him. Hold block firmly and face him away from the group.

Terminal Puzzle and Ventilation

Dps: At 85%, 65%, 45%, and 25% health, the boss retreats into the ceiling while the arena fills with deadly ventilation gas. Assigned runners use jump pads to reach upper platforms, activate terminals in correct sequence, and destroy conduits to force the boss back down.

Healer: Keep the ground group stabilized through ventilation gas and add damage while terminal runners complete the platform puzzle upstairs.

Ruptured Centurions

Tank: Enormous Ruptured Centurions spawn during transition phases. The off-tank must taunt them instantly, face their steam vents away from the raid, and hold them for cleave.

Dps: Focus all single-target and cleave DPS into Ruptured Centurions immediately to eliminate them before the boss descends.

Whirring Blades and Conduits

All: Spinning blade traps roll across the platform while sharpened conduits pulse electrical waves. Sidestep blade tracks and destroy sharpened conduits quickly.

Final Stand Disassembly

All: Below 20% health, the Assembly General sheds his arms and initiates continuous full-room electrical bombardment. Stack tightly in healer ground circles, pop all defensive barriers and offensive Ultimates, and burn the boss to 0 before healer resources expire.

Assembly Hard Mode Overdrive

All: On Hard Mode, boss and add health is increased, terminal timer margins are tight, and meteors leave lingering scorched ground that denies arena space during the final burn.