Press Up, Down, Left, Right, Down, Up at the main menu.
At the mission briefing screen, press [Left, Right, Up, Down] five times.
At the mission selection screen, press Up, Left, Down, Right, Up, Right, Down, Left, Up, L1 + R1, L2 + R2. If you entered the code correctly, the screen will flash. All missions will be unlocked, and when the game is paused a "Cheat Screen" option will appear on the bottom of the menu with such selections as "Player Can't Die", "All Weapons", and "One Hit Kills".
Get the cheat for all weapons, go to cheat options in the pause menu, click "yes" for all weapons, then, if desired, click "no". You will then have all the weapons you depleted.
Search for the info unit between the two asteroids, near the broken shuttle in mission 5 and use the tractor beam to acquire it.
Destroy half of the energy plough and use your tractor beam on the second half in mission 5.
Successfully complete mission 4 in under 6 minutes 44 seconds with more than 40% accuracy.
Successfully complete mission 1 in under 5 minutes 2 seconds with more than 40% accuracy.
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