Secret Weapons Over Normady - God Mode

Infinite Ammo:
At the New Game/Continue screen, quickly press Up, Right, Down, Left, Up, Right, Down, Left, L, R

Big Heads:
At the New Game/Continue screen, quickly press Right, Up, Left, Down, Right, Up, Left, Down, Right, L, R, L, R

All Insta-Action Stages:
At the New Game/Continue screen, quickly press Up, Down, Left, Right, L, R, L, R.

All environmets:
At the New Game/Continue screen, quickly press Down, Up, Up, Down, Left, Right, L, R, L, R.

More instant replay views:
At the New Game/Continue screen, quickly press Up, Down, Left, Right, R, R, L, L.

All Planes and Levels Unlocked:
At the New Game/Continue screen, quickly press Y, Y, Y, X, X, X, L, R, Black, Black, White, White

Unlock X-Wing and TIE Fighter:
Beat all 15 missions and all 22 challenge missions.