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