Here is the full list of all 25 Devious Dungeon 2 achievements.
Complete the game.
Defeat the Summoner Boss.
Defeat the Slug Boss.
Defeat the Cave Troll Boss.
Checked the map screen.
Collect the bounties on 6 mini-bosses.
Defeat the Undead Knight Boss.
Destroy 100 crates.
Collect the bounties on 3 mini-bosses.
Defeat the Earth Elemental Boss.
Received healing from the Priest!
Find 6 the lost treasure.
Read 5 tomes.
Kill more than 100 enemies.
Find 3 the lost treasure.
Destroy an arrow in mid-air.
Bought a potion.
Found a lost treasure.
Buy a trinket.
Bought a new weapon.
Bought some armor!
Found and killed a wanted mini-boss.
Leveled up for the first time!
Completed the training level.