Achievements:ACHIEVEMENT – HOW TO UNLOCKBlitz Attack (10) – Destroy 6 enemy bombers before they reach the Wake in the mission “Japanese Raid”.Bombshell (10) – Damage destroyer with machine gun fire in the mission “Invasion of Tulagi”.Brave Spirit (30) – Win a battle against superior forces in Versus mode.Choose Your Favorite (30) – Fly in one of each country