The Galactic Paragons Add-on for Stellaris has 6 achievements.
Discover Keides' Origin.
Terraform 3 planets with Azaryn.
Have 6 different Ethics on the Council.
Requires 5 Council members that are at at least 100 years old.
Overthrow the Ruler in a Civil War during the Under One Rule Origin.
Liberate 3 different empires while having Crusader Spirit Civic.