Here is the full list of all 22 Choice of Life: Middle Ages 2 achievements.
Get the Sword of the Three Kingdoms, Explosive Spores, and Fencing skill
Become a king who really didn't change a thing
Get half of the titles
Make everyone hate you
Complete chapter 2 and lose the battle
Meet the Leshy
Find the best queen
Complete Chapter 3 with any of the endings
Conquer the South
Complete chapter 2 and win the battle
Disenchant the Serpentine
Complete chapter 1
Get one title
Get all the titles
Find all the allies
Get all the skills in one playthrough (except scar)
Complete the game for all endings
Feel the taste of the marriage
Abdicate the throne
Feel the power of family ties
Miss all the opportunities to return to your castle
Lose the campaign