Create a vassal.
Conquer the Europe.
Create an alliance.
Sign a Non-aggression pact.
Embark a Unit.
Conquer ten provinces.
Conquer 200 provinces.
Build a Fortifications.
Build a Watch tower.
Build a port.
Beat the game on the Easy difficulty level.
Beat the game on the Normal difficulty level.
Beat the game on the Extreme difficulty level.
Beat the game on the Hard difficulty level.