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