This achievement is gained upon completion of all of the 10th anniversary tasks.

Complete 10th Anniversary Task - Culling Fever - Bertoxxulous' Favor
Complete 10th Anniversary Task - Crafting a Party - Brell Serilis' Favor
Complete 10th Anniversary Task - Bristlebane's Party Favor - Bristlebane's Favor
Complete 10th Anniversary Task - A Taste of Fear - Cazic-Thule's Favor
Complete 10th Anniversary Task - The Power of Hatred - Innoruuk's Favor
Complete 10th Anniversary Task - Tears of a God - Karana's Favor
Complete 10th Anniversary Task - Love, Norrathian Style - Erollisi Marr's Favor
Complete 10th Anniversary Task - Deliver Us From Evil - Mithaniel Marr's Favor
Complete 10th Anniversary Task - Fishing for Blessings - Prexus' Favor
Complete 10th Anniversary Task - Peace and Understanding - Quellious' Favor
Complete 10th Anniversary Task - Warrior's Rest - Rallos Zek's Favor
Complete 10th Anniversary Task - Healing Touch - Rodcet Nife's Favor
Complete 10th Anniversary Task - Bonfires of Vanity - Solusek Ro's Favor
Complete 10th Anniversary Task - Justice of the Tribunal - Tribunal's Favor
Complete 10th Anniversary Task - The Gift of Life - Tunare's Favor
Complete 10th Anniversary Task - Memory In Crystal - Veeshan's Favor