Set sail for the first time.
Survive your first enemy attack.
Sink the first enemy fleet.
Complete all three tutorial missions.
Finish the first chapter of the campaign.
Order a single officer with 6 medals.
Finish the second chapter of the campaign.
Unlock CV-9 Essex Class aircraft carrier.
Finish the third chapter of the campaign.
Finish the main historical campaign.
Complete historical campaign together with all objectives and gain all four medals in every mission.
Sink 100 ships.
Spend 50 points on upgrades.
Have 50 crew units die.
Send out an Airstrike mission that doesn’t sink any enemy fleets and have no squadrons return.
Sink a ship after the war ends on September 2nd 1945.
Have your carrier sink 10 times.
Travel a total of 10,000 miles.