Full list of all 39 The Dungeon Beneath achievements.
The base game contains 30 achievements, and there are 4 DLC packs containing 9 achievements.
Win a battle.
Reach Abaddon with Thardoric of the Hammer.
Reach Abaddon with Eloa.
Reach Abaddon with Dominique Boutroux.
Reach Abaddon with Elder Gryx.
Reach Abaddon with Mariana.
Reach Abaddon with Taz'gyn.
Defeat the Reanimated Colossus.
Defeat King Fetterbite.
Defeat Simulae Prime.
Defeat Dungeon Boss Firis.
Defeat The Hand of Abaddon.
Defeat The Mind Reaver.
Win a battle with only your hero left alive.
Acquire a Searing Sign.
Acquire Iliphar's Arbalest.
Acquire a Dragon Scale.
Have 10 Armor on a single unit.
Deal 10 or more damage to a single unit with one attack.
Deal 20 or more damage to a single unit with one attack.
Reach Abaddon with no Fighters.
Reach Abaddon in under 60 rounds.
Reach Abaddon with no Mages.
Reach Abaddon on New Game+.
Reach Abaddon on New Game++.
Reach Abaddon on New Game+++.
Reach Abaddon on New Game++++.
Win a battle in the first round.
Reach Abaddon with a Follower in your party.
Defeat Abaddon.
Reach Abaddon with Xandos.
Challenge a god on New Game++++.
The ultimate test...
Kill an Aurum Worm.
Challenge a god with the Lost Adventurer.
Close the Portal on Legend.
Survive Death's Invitation.
Defeat Death.
Climb more than 200 floors in The Tower.