Enter the "New Game" or "Load Game" screen. Hold L + R + Z and press Left, Up, Down, A, Right, B, Start to display the code entry screen. Enter one of the following codes to activate the corresponding cheat function.
Invincibility:
Enter SUPERMECH as a code.
All models and awards:
Enter WHERESMAX as a code.
Level select:
Enter WEWILLWIN as a code.
All multi-player levels:
Enter MULTIMAYHEM as a code.
Gunpod ammunition refilled faster:
Enter SPACEFOLD as a code.
Missiles refilled faster:
Enter MARSBASE as a code.
Gunpod and missiles refilled faster:
Enter MIRIYA as a code.
One shot kills:
Enter BACKSTABBER as a code.
One shot kills in sniper mode:
Enter SNIPER as a code.
Alternate paint schemes:
Enter MISSMACROSS as a code.
Upside down mode:
Enter FLIPSIDE as a code.
Disable active codes:
Enter CLEAR as a code.
Invincibility:
Select training mode. Enter jet fighter training, destroy only the first two targets, then exit. Enter story mode and you will be invincible.
Bronze Cross medal:
Destroy 50 Battle Pods.
Distinguished Service medal:
Complete the Enemy Within mission. Note: This also unlocks the Rick mech colors.
Gold Cross medal:
Complete the Silver Cross medal set and destroy 100 Battle Pods.
Gold Nova medal:
Complete the Vengeance mission three times.
Jolly Roger medal:
Complete the Party Crashers mission three times. This also unlocks the Skull Leader mech colors.
Master Airman medal:
Destroy 100 Fighter Pods.
Meritorious Service medal:
Complete the Force of Arms mission. Note: This also unlocks the Izzy mech colors. Debris Field versus mode level and Max mech colors.