Here is the full list of all 14 Dark Quest 2 achievements.
Unlock the archer
Unlock the dark monk
Unlock the dwarf
Learn 3 new abilities & skills
Loot 1000 gold
Unlock the holy knight
Roll the skull of fate
Kill your first enemy
Defeat the Evil Sorcerer
Play a multiplayer game with at least 1 friend.
Amass a fortune of 100.000 gold pieces
Complete the game in hardcore mode
Acquire the Talisman
Kill the executioner