Surrounding constructs are activated one by one, after 3rd, the boss shows up. He can knockback you into an active construct, but otherwise uncomplicated.
Spawns whirlwinds of fire and air with knockback and damage. Dispel her with any debuffs you have to make her "smaller"; while she is "enlarged" she hardly takes any damage. Probably can ignore the adds unless too many start to gang up. Can hide from the whirlwinds in the orb alcoves, or even in the Armor's room. Periodically blinks to one of her circleson the floor to enlarge again, but does not heal up.
Here and across the room, are two orbs used during the fight with Armor of Sul. You will have one or the other orb shining a beam of light at you. Move around until the beam cuts through the Armor of Sul. Repeat about 4 times to remove layers of armor from it, then it is easier to damage him.