Secret Weapons over Normandy Cheats

When you start mission3,dont shoot the Germans until you get to
the checkpoint[follow the Germans to the airport]. Then bomb the
hangers with medium bombs and go take over the reserve airfield,
after you take over land and go bomb the ships required. Then take
out the rest of the Germans planes and finish the mission

Successfully complete all campaign and challenge missions to unlock the TIE Fighter in Instant Action mode.

Unlock Tie Fighter:
Complete every campaign and challenge mission to unlock the TIE Fighter in Instant Action mode.
Unlock X-Wing:
Complete every campaign and challenge mission to unlock the X-Wing in Instant Action mode.

Y, Y, Y, X, X, X, L, R, Black, Black, White White All Planes and Levels Unlocked

Right, Up, Left, Down, Right, Up, Left, Down, Right, L Button, R Button, L Button, R Button
Big Head Mode

Up, Down, Left, Right, Left, Left, Right, Right, L, L, R, R, White, Black
God Mode

Up, Right, Down, Left, Up, Right, Down, Left, L Button, R Button
Infinite Ammo

Up, Down, Left, Right, L, R, L, R
Unlock All Insta-action Stages

Up, Down, Left, Right, L, R, L, R

Successfully complete all campaign and challenge missions to unlock the TIE Fighter in Instant Action mode.