At the main screen choose new game the press and hold the left and right triggers and quickly press Left, Up, Down, A, Right, B and start. After you do this, a screen should appear and you can type in one of these codes
Level Select: WEWILLWIN
Invincibility: SUPERMECH
All Multiplayer Levels: MULTIMAYHEM
All Paint Schemes: MISSMACROSS
Distinguished Service Medal
Complete the Enemy Within mission. Please note: This also unlocks the Rick mech colors.
FAST Pack Glitch
Begin a space mission and use the Super Veritech. After you beat the space mission and select "Continue" you will start the next mission with a Super Veritech even if the next mission does not allow FAST Packs to be used.
For Protecting The Cat's Eye
If you are having trouble with protecting the Cat's eye (in space), go into fighter mode & launch as many decoys as you can. Please note: You must be in fighter mode to deploy the decoys.
Gold Cross Medal
Complete the Silver Cross medal set and destroy 100 Battle Pods.
Gold Nova Medal
Complete the Vengeance mission three times.
Invincibility Glitch
1. Enter Training Mode.
2. Select Fighter Training.
3. After shooting down the first two targets, immediately pause and quit Training Mode.
4. Now begin story mode.
5. You should now be indestructable.
Jolly Roger Medal
Complete the Party Crashers mission three times. Please note: This also unlocks the Skull Leader mech colors.
Master Airman Medal
Destroy 100 Fighter Pods.
Meritorious Service Medal
Complete the Force of Arms mission. Please note: This also unlocks the Izzy mech colors.
R.D.F. Flying Ace Medal
Complete the Master Airman medal set. Please note: This also unlocks Debris Field versus mode level and Max mech colors.
R.D.F. Starburst Medal
Complete all Boss missions two times. Please note: This also unlocks the Flood City versus mode level.
R.D.F. Supernova Medal
Complete Gold Nova medal set. Please note: This also unlocks the City In Space versus mode level and the Patriot mech colors.
Robotech Marksman Medal
Kill 50 Nousjadel-Ger in Sniper Mode. Please note: This also unlocks the Stealth mech colors.
Silver Cross Medal
Complete the Bronze Cross medal set and destroy 75 Battle Pods.
Silver Shield Medal
Use the VF-1A to complete the Graveyard mission. Please note: This also unlocks the Graveyard versus mode level and Miriya mech colors.
Southern Cross Medal
Complete the Gold Cross medal set. Please note: This also unlocks the Factory versus mode level and the Armored Valkerie in versus mode.
Superior Defense Medal
Complete the Attrition mission. Please note: This also unlocks the Graystone versus mode level.
Titanium Medal Of Valor Medal
Complete the Knife's Edge mission. Please note: This also unlocks the VF-1J in story and versus modes.
Tuna Head Medal
Kill 50 Del Regults. Please note: This also unlocks Queadluun-Rau in versus mode.
Wolf Leader Medal
Complete the To The Death mission. This also unlocks the VF-1R in story and versus modes and the Wolf mech colors.