Robotech - Battlecry cheats and cheat codes for Playstation 2

Cheat mode
Choose the "New Game" option in the main menu. After, 
hold L1 + L2 + R1 + R2 and quickly press 
Left, Up, Down, X, Right, Triangle, Start 

The cheat entry screen will appear. Enter any of 
the codes below:

All multi-player stages: Enter "MULTIMAYHEM" as a code.
All paint schemes: Enter "MISSMACROSS" as a code.
All veritechs and medals: Enter "WHERESMAX" as a code.
Disable cheats: Enter "CLEAR" as a code.
Invincibility: Enter "SUPERMECH" as a code.
One-shot kills in sniper mode: Enter "SNIPER" as a code.
One-shot kills with gunpods: Enter "BACKSTABBER" as a code.
Quick gunpod and missile refresh: Enter "MIRIYA" as a code.
Quick Gunpod refresh: Enter "SPACEFOLD" as a code.
Quick Missile refresh: Enter "MARSBASE" as a code.
Reverse mode: Enter "FLIPSIDE" as a code.
Stage select: Enter "WEWILLWIN" as a code.


Invincibility
Go to fighter training, destroy 2 targets, after leave.
Go to story mode and you should be invincible.