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