Gain Olias

Overview
Quest Summary:
 * 1) Lead a contingent of Lionguard to investigate the disturbances in North Kryta province.
 * 2) Defeat the demons attacking Olias.
 * 3) Get a report on the demon problem from Olias.
 * 4) Deliver Olias's letter.
 * 5) See Lionguard Figo for your reward.

Obtained from:
 * Lionguard Figo (Lion's Arch)

Requirements:
 * ((none known as of yet, freely obtainable by any character in Lion's arch, regardless of having any expansion))

Reward:
 * 100 XP
 * Olias joins your party

Dialogue
 * "The Lionguard have uncovered information about an attack in North Kryta Province. The missive mentioned information about creatures that appear to be similar to the demons you said were plaguing Elona. you seem to be the expert in these things, so I'd like to call you in for help. Can you travel to North Kryta Province and help Olias with these disturbances?"

Intermediate Dialogue 1 (Olias) 
 * "I was a White Mantle before my death... before my calling. I stared into the face of Grenth and he sent me back with true purpose. I am Grenth's hand upon the world. I shall seek out the world's betrayers and show there is mercy... only beyond the gates of hell."

Intermediate Dialogue 2 (Mantle Knight Marrya) 
 * "You have a letter of resignation from Olias? Let me see that.  By the gods, how horrible.  I suppose I can understand the crisis of faith after such a horrible experience. But I wish he had come to me to talk about it. All I can do now is pray that he sees the error in his decision... and pray for his lost soul."

Reward Dialogue
 * "Olias's experiences with these creatures unnerves me. What kind of horrible monsters do these demons serve?  I will pray for him.  Perhaps he will realize his error and come back to the White Mantle in time."

Walkthrough
The quest was done extremely quick, and i got disconnected before i could take down all the enemy's names, stats and talks, but here is the quest in a nutshell :

Exit Lion's Arch, where you will find five Lionguard soldiers waiting for you outside. Take a left and cross the bridge until you meet Olias. The moment you speak to him, five level 24 Margonite ghost-type creatures attack (one cleric, four sorcerers), and battle ensues.

As per standard procedure, kill the cleric first, minions second. Our group of level 20s killed them in under 2 minutes. Afterwards, speak with Olias again. You will get a report about the incident, which you must bring back to Figo. (Tip : The sorcerers seem to be using an elite spell called Invoke Lightning a lot, hitting for 100 damage.)

A short walk to D'Alessio Seaboard to deliver the letter, and a quick warp to Lion's Arch, and you are done.