Here is the full list of all 23 Devious Dungeon achievements. It takes around 5-6 hours to unlock all of the achievements on Windows.
Defeat the Dragon Boss.
Complete the game!
Defeat the Stone Golem Boss.
Collect 100 keys.
Defeat the Butcher Boss.
Defeat the Ancient Beholder Boss.
Resurrect more than 25 times.
Destroy 500 crates.
Play over 100 levels!
Kill more than 500 enemies.
Defeat the Orc Chief Boss.
Receive a blessing from the Priest.
Destroy an arrow in mid-air.
Bought a potion.
Spend more than 1500 coins.
Bought some armor.
Bought an amulet.
Read your first tome.
Bought a ring.
Bought a new weapon.
Leveled up for the first time!
Completed the training level.
Checked the map screen.