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