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