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