Most Adorable Death was the achievement you got from killing Good King Moggle Mog XII in Thornmarch. Fun Fact: The 1.0 version wouldn't end upon killing the king if there were still moogles left, small moogles would spawn at intervals in a random order after whiskerwall, the original entrance was located in West Shroud near Treespeak south of the Crimson Bark aetheryte.