Debug Menu:
When the Core Design copyright screen appears, quickly press Up, Down, Left, Right,
Down, Down, Right, Right, Square. A debug menu will appear.
Invincibility:
Start a game then quit by pressing Start+Select. Now at the Main Title Screen,
press Up, Up, Up, Down, Down, Down, Right, Right, Triangle. You'll hear a sound
to confirm correct entry.
Bonus Mission:
At the Briefing screen, open the locker and enter the code 4L2CZCQKDAABACQDB.
You'll begin the extra mission.
Thanks to Revolution readers Daniel Fortea and Nate Barnes!
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