Here is the full list of all 69 Diehard Dungeon achievements.
Obtain Trigger Happy ability.
Obtain Vision ability.
Use 50 tokens.
Obtain Triple Shot ability.
Obtain Heavy Duty ability.
Obtain Lightfoot ability.
Obtain Mithridate ability.
Avoid picking up 20 hearts.
Obtain Scatter ability.
Defeat 2000 enemies.
Escape the dungeon.
Open the gold chest.
Defeat Zombie Chest.
Pickup 100 hearts.
Attain Warrior rank.
Defeat Hive Mind.
The Companion Chest upgrades to its maximum level.
Obtain Looter ability.
Defeat Evil Chest.
Obtain Reflex ability.
Obtain Kaboom ability.
Obtain Knives ability.
Obtain Toasty ability.
Obtain Attract ability.
Obtain Heartbreaker ability.
Obtain Iron Grip ability.
Obtain Voodoo ability.
Destroy 20 chests.
Obtain Repel ability.
Destroy 300 lights.
Have 20 tokens.
Destroy 1000 containers.
Collect 10,000 treasure.
Attain Fighter rank.
Avoid opening 10 chests.
Obtain Sense ability.
Obtain Slash ability.
Obtain Forget-Me-Not ability.
Achieve rank 10 in Mayhem.
Obtain Fireproof ability.
Obtain Courage ability.
Attain Valiant rank.
Attain Adept rank.
Attain Slayer rank.
Attain Hero rank.
Attain Champion rank.
Attain Legend rank.
Attain Diehard rank.
Defeat the Dungeon Master.
Escape the dungeon in Champion Mode.
Win a Trapdoor game.
Use 20 Teleporters.
Obtain Houdini ability.
Obtain Dash ability.
Defeat Mr Illusion.
Defeat Stumpy.
Defeat Giant Oaf.
Defeat 200 enemies by setting them on fire.
Destroy 500 containers with fire.
Survive 20 rooms of Survival
Obtain Pierce ability.
Escape the dungeon at Diehard rank, in Champion Mode, and defeat the Dungeon Master.
Complete Fading Light in under 3 minutes.