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