Invincibility Glitch

Select the training mode option from the start menu and go to the Fighter mode trainer. After you kill the first two drones immediately pause and quit. When you select any missions from story mode you will now be invincible.

Cheat Mode

At the main menu, select the "New Game" option. Then, hold L + R and quickly press Left, Up, Down, A, Right, B, Start to display the cheat entry screen. Enter one of the following codes to activate the corresponding cheat function:

Level select 
Enter "WEWILLWIN" as a code.

Invincibility 
Enter "SUPERMECH" as a code.

All multi-player levels 
Enter "MULTIMAYHEM" as a code.

All paint schemes 
Enter "MISSMACROSS" as a code.

All veritechs and medals 
Enter "WHERESMAX" as a code.

One-hit kills with gunpods 
Enter "BACKSTABBER" as a code.

One-hit kills in sniper mode 
Enter "SNIPER" as a code.

Gunpods refresh quicker 
Enter "SPACEFOLD" as a code.

Missiles refresh quicker 
Enter "MARSBASE" as a code.

Both gunpods and missiles refresh quicker 
Enter "MIRIYA" as a code.

Disable active cheats 
Enter "CLEAR" as a code.

Invincibility

Select Fighter Training in the Training mode. Destroy two targets. Quit the training mode. Enter Story Mode. Presto, invincibility.

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. Note: You must be in fighter mode to deploy the decoys.

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.

Tuna Head Medal

Kill 50 Del Regults. Note: This also unlocks Queadluun-Rau in versus mode.

Titanium Medal Of Valor Medal

Complete the Knife's Edge mission. Note: This also unlocks the VF-1J in story and versus modes.

Superior Defense Medal

Complete the Attrition mission. Note: This also unlocks the Graystone versus mode level.