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