The Ancient Relics Story Pack Add-on for Stellaris has 13 achievements.
Have 100 Minor Artifacts
In one game, find 5 Relics from Ancient Relics Story Pack
Successfully investigate an archaeological site
Complete the Baol Precursor chain
Complete the Zroni Precursor chain
Study Minor Artifacts and discover a random technology
Use the active effect of a Relic
Be a founding member of the Galactic Community
Have all eight ethics represented within your Federation
Complete a mutually friendly First Contact with an empire with no negative incidents
Vivisect an alien
Have an Intel Level of 100 on five different empires simultaneously
Have at least 10 pops of your primary species on display in Alien Zoos within your empire.