Has the achievements been affected by the addition of the new expansion and the new armour etc? My Warlock is now fully outfitted in all Legendary weapons and armour, incluing the Class armour, and the achievement has not been unlocked. The only variation is that the leg armour is Legendary from the expansion (has the little diamond in the corner) - does having the expansion armour mixed with the regular game armour throw a wrench into the works when the game is analysing the situation? I think it may be a glitch they didn't catch in testing.