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