Description
You stopped a war between the Banished Pantheon and the Circle of Thorns.
How to Get
Obtain the Spirit Warrior accomplishment badge by putting an end to the battle between the Banished Pantheon and the Circle of Thorns. The mission is given by Cain Royce, Dr. Cheng, Oliver Haak, Piper Irving and Josef Keller, and described as Stop both groups of mystic madmen.
Apparently, none of the contacts for Spirit Warrior will offer the mission until level 22, even if you go through all their other missions first.