Thwarting the Invasion

''The White Citadel is the residence of the ruler Neishar, and the de facto symbol of the Inventus. If the White Citadel were to fall, the hopes of the people would be destroyed along with it. Defeat the Dark Apostles invading the White Citadel.''

Thwarting the Invasion is a main quest in Elyon.

Walkthrough
Talk to Sylas Visen. He tells you that Kurukan must be defeated, but your conversation is interrupted when Kurukan turns several Elite Inventus Trooper s into machines. Kurukan then starts his awakening. Stop the awakening using the Neishar Family Artifact and defeat Kurukan. Talk to Sylas again who tells you to hurry to the upper deck.

Dialogue
Conversation with Sylas Visen:

[Player name]! You're finally here! Forgive us. We tried our best to defend the White Citadel, but our efforts fell short. In fact, the Dark Apostles are spreading their reach using this area as their base.

If we don't defeat that Dark Apostle known as Kurukan, they'll come pushing through in even greater numbers... ...Wait, what the hell are those thugs doing right now?

Sylas Visen: A-a living person...turning into a machine?!

Kurukan: Protect me until my awakening is complete!

Sylas Visen: What the hell is that scumbag up to?! That's it! Use the power of the Arcana! There's no telling what Kurukan will do if we don't do something to stop them!

Kurukan: Gah! This...is the power of the Tree of Sefiroth?! The Arcana was extracted from it somehow?!

Kurukan: H-how dare these worms meddle in our affairs?! Unforgivable!

Conversation with Sylas Visen:

...I'd heard that the Dark Apostles could convert living things into machines, but... I had no idea it would be this terrible...

Things have died down here, but the upper deck is probably still under attack by the Dark Apostles. If this continues, the Inventus is sure to sink. We must hurry to the upper deck at once.

Rhea Este is there as well? That's a relief! Clearing the Dark Apostles from the upper deck will surely help secure the safety of the Inventus!

Rhea Este: There's an emergency on the upper deck! The defensive forces are hopelessly outnumbered! Send reinforcements to the upper deck immediately! Dammit...! Those Dark Apostles! They're not giving us a chance to conjure a barrier!

Sylas Visen: Oh no! Let's hurry to the upper deck!

Objectives

 * Go to the White Citadel Square.
 * Talk to [Sylas Visen].
 * Stop Kurukan's awakening.
 * Use the power of the [Neishar Family Artifact] on Kurukan.
 * Defeat Kurukan, who is occupying the White Citadel Square.
 * (0/1) Defeat [Kurukan].
 * Talk to Sylas Visen again.
 * Talk to [Sylas Visen].