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