Here is the full list of all 13 Reigns achievements.
Trapped in an endless middle-age
Reach year 2000
Beat the skeleton more than 5 times in a row
Meet all the characters
Govern less than 3 years
Govern more than 50 years
Read all the cards
Suffer all the deaths
Govern more than 100 years
Suffer more than a 100 deaths
Do not fulfill the Death wish
Rot in hell for eternity
Trick the Devil