Enter "RVL" as a name at the name entry screen 
and keep the "L" highlighted for the next letter. 
If done correctly, your name will appear as "RVLL" 
with the second "L" still flashing. Press Start to 
delete your name and press B to return to the main 
screen. "All missions" and more options will now 
be available. Pause the game during a mission to 
display a menu with a variety of cheat options.