At the main menu, hold L, Z, and R and press Left, Up, Down, A, Right, B, Start.
This will bring up the code entry screen. Now enter the following cheats.
WHERESMAX All models are awards
WEWILLWIN Level select
MULTIMAYHEM All multiplayer levels
SPACEFOLD Gunpod refresh faster
MARSBASE Missiles refresh faster
MIRIYA Gunpod and missiles refresh faster
BACKSTABBER One shot kills
SNIPER One shot sniper kills
MISSMACROSS All paint schemes
FLIPSIDE Upside down mode
CLEAR Turn off codes
Go into Training mode, pick the Veritech Fighter training, shoot down only the
first two targets, then quit the game. Now go into Story mode and you'll be
indestructible no matter the stage or style of fighter that you choose.
Thanks to Revolution readers -TroJax-, Ian Hartford, nierfherder, Duo Maxwell,
zach stricker, and stealthmonkey245!