Here is the full list of all 29 Card Quest achievements.
Kill the Great Spinner, the Spider Huntress and the Spider High Master.
Finish the Forgotten Ruins.
Stop the spread of the plague.
Considerably reduce the rat population in the City.
Finish the Deep Gardens without killing any Nymphs.
Finish the Dwarven Mountains adventure.
Kill Skelfilegur, Ijotur and the Great Modir in the Mountains.
Kill the Moontouched and Hans Mooncursed.
Finish the Enchanted Forest adventure.
Kill a Giant Boar and a Cave Bear.
Reach the Peak in Dwarven Mountains.
Destroy the Harpy Nest.
Destroy a goblin village.
Have more than 1200 gold in one run.
Kill the 3 different types of horror that can be found in the City (Hulking, Festering and Burning Horror).
Finish the Cursed City adventure.
Kill the King in the City.
Help the city guard clean the streets of High Town.
Reach the epicenter of the plague.
Buy one of the special offers in Alley Town's shop.
Complete all trainings.
Eat a royal sausage.
Kill 6 different Kings (the King, Dwarven King, Fairy King, Forest King, Shadow King and Forgotten King).
Have your hero reduce his intellect considerably.
Meet Jacknives in Alley Town after finishing the Rogue Training.
Collect all 9 wizard familiars.
Become a demon.
Have your hero come back to life.
Collect all items in the game.