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