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.