The Realm of the Diggle Gods Add-on for Dungeons of Dredmor has 8 achievements.
Master the Piracy Skill Tree.
Drown.
Master the Werediggle Skill tree.
Master the Emomancy Skill tree.
Master the Vegan Skill tree.
Master the Big Game Hunter Skill tree.
Master the Demonology Skill tree.
Die at the hands of a Muscle Diggle.