Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Centralized Government	each Centralization 11.
Conqueror of Stars	Win the 'Conqueror of Stars' scenario.
Crushed Rebellion	Crush the rebellion at least once.
Enlightened Ruler	Win the 'Enlightened Ruler' scenario.
Grand Legislator	Pass all laws.
Grand Reformer	Pass all reforms.
Imperator	Win the game on Hard or Insane difficulty.
Junior Imperial Scientist	Reach level six in all fields of science.
Political Marriage	Arrange a political marriage with another noble house.
Regent	Win the game on any difficulty.
Senior Imperial Scientist	Reach level twelve in all fields of science.
Stable Government	Reach Stability 90.
Unifier of the Empire	Win the 'Unifier of the Empire' scenario.