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