Medal Of Honor - Frontline cheats and cheat codes for Gamecube

God Mode :
Pause and press B, L, B, R, Y, L, X, DOWN. 

Bullet shield
Pause the game and press B, B, R, L, Y, X.

Cheat codes:
Enter the following codes to the Enigma Machine. If the codes 
are accpeted, you will see a flashing green lights.

Enable cheat mode: Enter "BALLOWAX"

Achilles' head mode: Enter "HEADSUP"
Bullet shield mode: Enter "REFLECTOR"
Finish current mission with Gold Star: Enter "SEAGULL"
Invisible enemies: Enter "HIDENSEEK"
Men with hats: Enter "MADHATTER"
Mission 2: Enter "EAGLE"
Mission 3: Enter "HAWK"
Mission 4: Enter "PARROT"
Mission 5: Enter "DOVE"
Mission 6: Enter "TOUCAN"
Mohton torpedoes: Enter "BIGBOOMER"
Perfectionist: Enter "FLAWLESS"
Rubber grenade mode: Enter "BOUNCE"
Silver bullet mode: Enter "SILVERSHOT"
Snipe-O-Rama mode: Enter "SUPERSHOT"