The Utopia Add-on for Stellaris has 10 achievements.
Construct a complete Sentry Array
Construct a complete Dyson Sphere
Construct a complete Ring World
Construct a complete Science Nexus
Breach the Shroud
Evolve into perfect, immortal machines
Genetically modify a species to possess traits worth 7 points
Build a Habitat station in a Black Hole system
Have at least 10 different species living under Utopian living conditions in your Empire
Keep at least 5 different species as livestock in your Empire