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