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