Here is the full list of all 27 Dungeons - there are The Dark Lord achievements.
Survive 60 minutes in any survival map.
Accumulate 5,000 prestige in any “sandbox” map.
And so is the last of our budget…
Kill the giant spider.
Summon the army of the living dead.
Learn more about the Zombie King.
Kill 12 heroes at once using Calypso's Roundhouse Kick.
Lift the siege of Marthas' Deep.
Achieve a monster level of 20 in any map.
Encounter the beast in the grottoes.
Let the skeleton fall into the well.
Kill 6 heroes at once using Calypso's Roundhouse Kick.
Vanquish the yeti.
Use 50 scrolls.
Drink 50 potions.
Use 10 scrolls.
Drink 10 potions.
Kill 3 heroes at once using Calypso's Roundhouse Kick.
Escape the Noseghul.
Complete all tutorials.
Win any multiplayer “Piñata” map.
Collect a total of 50,000 prestige in multiplayer “Piñata” matches, across all playthroughs.
Collect a total of 5,000 prestige in multiplayer “Piñata” matches, across all playthroughs.
Win any multiplayer “King of the Hill” game as the Zombie King.
Win any multiplayer “King of the Hill” game as Minos.
Win any multiplayer “King of the Hill” game as the Dark Lord.
Win any multiplayer “King of the Hill” game as Calypso.