Wait until cargo/energy screen appears, move the cursor to the top
left-hand corner with the joystick, then press fire and [+] on the
keypad simultaneously. The screen should flash and you will be
furnished with infinite shields and lives.
To get to the end of the game, simply go to the outer-most planet.
[F1] - Disables enemies
[F6] - Replenishes energy
[0]-[9] - Different weapons
