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