Zilart Mission 16
The Celestial Nexus
Enter the Shrine of Ru'Avitau from the (I-6) entrance in Ru'Aun Gardens. Mobs in the Shrine of Ru'Avitau aggro on sight, sound and magic.
Go South, and continue past the yellow door to (J-7). Head West after the second yellow door to (H-7). Then, head South into a room with two elementals.
You no longer need Sneak beyond this point. Follow either the East or West corridor until you arrive at another elemental room at (H-10). Then, continue north until you reach (H-9). This is the entrance to the Celestial Nexus. Here, you will fight Eald'narche with one party.
Eald'narche
First Form
Eald'narche first appears surrounded by Exoplates that must be defeated before he can be touched. He also has two orbitals that will continually re-appear when defeated. They should be slept with Sleep (they tend to resist Lullaby).
The Exoplates must first be destroyed, as they prevent you from attacking Eald'narche, and they do a high-damage AoE attack called Phase Shift that's capable of wiping your party.
The Exoplates have about 10,000 HP. To exhaust this quickly, melees should use their two hours and any available abilities to get them down as fast as possible.
Once the exoplates have been defeated, it's a good idea to stay back from Eald'narche for a bit to rest up MP and raise any fallen party members. This is your only real opportunity to heal yourselves.
Eald'narche himself must now be brought down. He only has about 2,000 HP, and while his Sleepga II may annoy you, he's fairly tame. (A little Ancient Magic never hurt anyone.)
Second Form
Eald'narche again only has about 2,500 HP in this form. Melee's will have a harder time, as he'll teleport around the battlefield and resist much of the damage from them. Poison Potions will help keep you awake as he continues to use Sleepga II in this form.
Once you defeat him, you'll see a final cutscene and be dropped off in the Hall of the Gods.
Next: ZM17: Awakening