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