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