Robotech: Battlecry

FAST Pack Glitch

Begin a space mission and use the Super Veritech. After you beat the 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.

Invincibility

Enter Training Mode, and select Fighter Training. Shoot down the first two targets, then immediately pause and quit Training Mode. Begin story mode, and you should now be invincible.