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