Here is the full list of all 32 The Count Lucanor achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Guess the kobold's name using the letters.
Catch Eisbein.
Kill the old woman and Eisbein.
Get the fire room letter without using the bucket of water.
Feed the worm from the depths.
Get the treasure hunter badge from Giulia.
Find the hidden treasure of the Count.
Discover the truth in the throne hall.
Catch the butterfly in the depths.
Open the garden chest.
Guess the kobold's name without using the letters.
Use the snake ring at the best place.
Find J.F.'s most important note.
Enter the fire room from a secondary door.
Find the castle's wall at day.
Find the chest hidden near your house.
Find some stale bread before night falls.