Here is the full list of all 19 The Choice of Life: Middle Ages achievements.
Reborn 30 times
Get all possible titles
Get rid of the Demon forever
Defeat the mercenary
Check the friendship of two friends
Get 24 titles
Help the Prince to imprison the Demon
Reborn 10 times
Cheer the King
Enter the city through the main gate
Complete the blacksmith's challenge
Destroy the kingdom
Complete the trial of the treasury keeper
Read the first and second volumes of the book "The Victory of Good"
Prevent a fire in the scriptorium
Enter the city through sewers
Defeat the Bandit Leader
Get the title for the first time
Make a deal with the spirit