Unlock the following units by performing the corresponding tasks:
American missions HIDDEN OBJECTIVE - HOW TO UNLOCK Allen M. Sumner Class Destroyer - Beat the "Battle Of Santa Cruz" mission. Anti-Submarine Warfare Fletcher Class Destroyer - Beat the "Battle Of Cape Engano" mission. Atlanta Class Anti-Aircraft Cruiser - Beat the "Battle Of Cape Esperance" mission. B-29 SuperFortress Heavy Bomber - Beat the "Air Raid Against Indochina" mission. Gato Class Attack Submarine - Beat the "Defense Of Henderson Airfield" mission. Iowa Class Battleship - Earn a gold medal on the "First Battle Of Guadalcanal" mission. TBM-3 General Motors Avenger - Earn a gold medal on the "Battle Of Okinawa" mission.
Japanese missions HIDDEN OBJECTIVE - HOW TO UNLOCK Akizuki Class Anti-Air Destroyer - Earn a silver medal on the "Saving The Shoho" mission. H8K Emily Flying Boat - Earn a silver medal on the "Destruction Of Z Force" mission. I-400 Submarine - Earn a silver medal on the "Hunt For The USS Hornet" mission. J7W Shinden Fighter Plane - Earn a silver medal on the "Invading Of Port Moresby" mission. Betty with Ohka Suicide Rocket Plane - Earn a gold medal on the "Invasion Of Hawaii" mission. Shimikazi Advanced Torpedo Destroyer - Earn a silver medal on the "Solomons Skirmish" mission. Tone Class Heavy Cruiser - Earn a silver medal on the "Battle Of Java Sea" mission. Type B Submarine with Kaiten Manned Torpedoes - Earn a silver medal on the "Attack On Sydney's Harbour" mission. Yamato Class Battleship - Earn a gold medal on the "Invasion Of Midway" mission.
Achieve the following hidden objectives by performing the corresponding tasks in the specified missions:
American missions HIDDEN OBJECTIVE - HOW TO UNLOCK 1. Battle Of The Eastern Solomons - Sink all Japanese ships. 2. Battle Of Cape Esperance - Destroy the southern escaping convoy. 3. Battle Of Santa Cruz - Sink a battleship from the Vanguard Force and destroy all enemy ships on veteran difficulty. 4. Defense Of Henderson Field - Take out the destroyers Ikachuki and Inazuma. 5. First Battle Of Guadalcanal - Sink the Heiei in less than five minutes. 6. Second Battle Of Guadalcanal - Destroy all three seaplanes stationed at Savo Island. 7. Invasion Of Tarawa - Destroy all anti-air guns. 8. Battle Of The Philippine Sea - Win without losing the USS Albacore. 9. Divine Winds Of Leyte - Bomb all fortresses into the ground. 10. Battle Of Cape England - Destroy the Japanese transport convoy. 11. Sub On Patrol - Steal the Japanese recon plane. 12. Air Raid Against Indochina - Sink the convoy before it escapes and destroy the train with the exploding refinery. 13. Invading Iwo Jima - Protect all transport ships. 14. Battle Of Okinawa - Prevent the Yamato from reaching the shore.
Japanese missions HIDDEN OBJECTIVE - HOW TO UNLOCK 1. Attack On Pearl Harbor - Bomb the Neosho while it passes California and destroy both Henry's ship and Donald's plane in Pearl Harbor. 2. Destruction Of Z Force - Take out the Repulse before reinforcements arrive. 3. Battle Of Java Sea - Prevent all attacks on transports by sinking the destroyer Electra. 4. Saving The Soho - Take out the radar station. 5. Invading Of Port Moresby - Keep hold of your bases. 6. Hunt For The USS Hornet - Take out all transport ships in the convoy. 7. Invasion Of Midway - Disable the airfields by destroying all fuel tanks. 8. Defense Of Guadalcanal - Do not allow any of the landing ships to reach shore. 9. Solomons Skirmish - Keep all Japanese battleships functional. 10. Attack On Sydney's Harbour - Find the lost Japanese recon plane marked on the map as O-804. 11. Seizing The Fijis - Spot the minefield with a recon plane. 12. Meet The Germans - Sink one ship with both submarines and land in the sea with a flying boat or a seaplane. 13. The Road To Hawaii - Destroy the radio station and its defenses on the island to the west. 14. Invasion Of Hawaii - Send a recon plane to spy enemy submarines before the attack.