Unlocking the two mini campaigns (Dogfight & Bombing) is accomplished by beating the main campaign mode. Each mini campaign contains six missions. Once all six are complete, two more aircraft (per mini campaign) are unlocked. In addition, the weapons of the aircraft can be upgraded by completing the two mini campaigns.
Hold Minus + Plus and quickly press Left, Right, 1, 2, 2, 1 at the menu after selecting your pilot. This code will unlock all campaign missions, all stand alone mode stages and planes, all medals, all paint schemes, and all aircraft in the hangar.
At the menu immediately following the choose pilot.
 Complete the indicated task to unlock the corresponding aircraft.
After successfully taking the first three pictures of the ships, continue to the desert. Watch your radio signal when it picks up. You should have the two bars to be all fully green. When that happens, you can pick up the camp on the radar.
 Successfully complete the Campaign mode.
When in a dogfight, hold in the brake to sharpen yourturns. This allows you to get the edge on a turning dogfight whentrying to outmaneuver your opponent. This is best used with themore maneuverable planes like the Gladiator, Zero, Both Hurricanes,and the N1K Shinden. Getting skilled with this will allow youto become a better dogfighter.
If you have troubles keeping steady, aiming, and/or shooting, try using the Wii Zapper for stability.
Completing the campaign missions with certain rankings unlocks new aircraft after each mission. Simply beating the mission unlocks the first of the two aircraft, while a Veteran Pilot ranking is required to attain the second. The rankings are given with stars, with the maximum number being five and the minimum being one. Three stars are required for a Veteran Pilot ranking.
Pause game play, then hold Minus and quickly press 1, 2, 1, 2. A message will confirm correct code entry. Repeat the code to disable its effect. Note: You will only be invincible to enemy bullets.