Here are some cheats and tips for the game Mechwarrior.
Invincibility:
Press Start to pause game play after landing on a planet.
Press A, L(2), Y, A, L(2),
Y, A, L(2), Y. The word “Invincible”
will appear to confirm correct code entry.
$1,000,000:
Start a new game and play the following missions in order:
Riot Duty on Zhada, Riot Duty on Solaris, Assault on Quilon, and
Siege on Dalview. All four missions must be completed without
talking to Cearle. Enter the Zero-Zero club and speak with Larmen
Sholest to receive the money.