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.
Resurrect more than 25 times.
Defeat the Ancient Beholder Boss.
Play over 100 levels!
Destroy 500 crates.
Kill more than 500 enemies.
Defeat the Orc Chief Boss.
Receive a blessing from the Priest.
Bought an amulet.
Spend more than 1500 coins.
Bought a new weapon.
Destroy an arrow in mid-air.
Read your first tome.
Bought some armor.
Bought a ring.
Bought a potion.
Leveled up for the first time!
Completed the training level.
Checked the map screen.