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