The Aetherochemical Research Facility

The climactic final dungeon of the Heavensward main scenario, set in an Allagan facility above Azys Lla.

Regula van Hydrus

Mechanic	Type	Description
Magitek Turrets	Adds	Random players are tethered to turrets - tanks stand between turret and player to soak
Stun + Tankbuster	Tankbuster	Boss stuns then heavily hits the tank - requires cooldowns and healing
Magitek Slug	AoE	Boss jumps around targeting random players with column AoEs
Magitek Spread	AoE	Massive arena-wide AoE - stand directly behind the boss to avoid

Notes:

• When tethered to a turret, have the tank stand between you and it
• Destroy turrets while managing tether damage

Harmachis

Mechanic	Type	Description
Weighing of the Heart	AoE	Transforms the boss between different forms
Sphinx Form	AoE	Uses Riddle of the Sphinx (circular AoE) and Ka (cone AoE)
Anti-Cobra Form	Tankbuster	Heavy tankbuster requiring healer attention
Anti-Naga Form	Gaze	Petrifaction gaze - turn away to avoid being petrified
Anti-Machina Form	Stack	Ballistic Missile targets 1 player to stack; Meteor requires all to stack

Notes:

• Watch for the boss’s transformation and adapt to each form
• Turn away during Anti-Naga Form to avoid petrification
• Stack for Meteor in Anti-Machina Form

Ascian Prime

Mechanic	Type	Description
Lahabrea Phase	AoE	Fire-based attacks while Igeyorhm throws column AoEs
Igeyorhm Phase	AoE	Ice-based attacks while Lahabrea throws column AoEs
Thin Ice	AoE	Movement causes you to slide uncontrollably in one direction
Dark Orb	AoE	Dodge dark orb attacks
Sea of Pitch	AoE	Avoid dark puddles on the ground
Fire/Blizzard Spheres	AoE	Combined elemental sphere attacks

Notes:

• Two-phase fight featuring Igeyorhm and Lahabrea sequentially
• The active boss attacks while the inactive one teleports and throws column AoEs
• Be careful moving during Thin Ice - you’ll slide