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 on New Game+.
Deal 20 or more damage to a single unit with one attack.
Reach Abaddon with Taz'gyn.
Acquire a Searing Sign.
Reach Abaddon with Mariana.
Defeat The Hand of Abaddon.
Defeat Dungeon Boss Firis.
Defeat the Reanimated Colossus.
Acquire a Dragon Scale.
Reach Abaddon with no Mages.
Acquire Iliphar's Arbalest.
Defeat Simulae Prime.
Defeat King Fetterbite.
Defeat Abaddon.
Reach Abaddon with Eloa.
Reach Abaddon in under 60 rounds.
Defeat The Mind Reaver.
Deal 10 or more damage to a single unit with one attack.
Win a battle in the first round.
Win a battle.
Reach Abaddon with Thardoric of the Hammer.
Reach Abaddon with Dominique Boutroux.
Reach Abaddon with Elder Gryx.
Win a battle with only your hero left alive.
Have 10 Armor on a single unit.
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.
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.