This achievement is gained upon completion of all of the 14th anniversary missions.

Crusader Rylroth in the Chapterhouse of the Fallen - Surviving Xmiticzin
Huckle Thornleaf in the Valley of King Xorbb - Evil Eye Operative
Piestro in the Great Divide - Piestro's Day Off
Complete one of the following missions: To Thine Own Creator Be...
 True - Find a Roughly Printed Note on the failed creation that roams the Convorteum.
 False - Find a Roughly Printed Note on the failed creation that roams the Convorteum.
Sheriff Knotter Botter in the Steamfont Mountains - Big Gnomes, Big Problems
 To request 'Big Gnomes, Big Problems' Complete: Sheriff Knotter Botter - Ogres at the Gates