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