Archer Maclean's Mercury [PSP]
Bonus Level
Get the top high score in each level in a world to unlock that world's bonus levels.
Level select
Select two player mode, then enter "hg?" as your initials. Return to the main menu and start a single player game. At the world selection screen, hold L + R and press Select to unlock all levels. To lock all levels, hold L + R and press Select again.
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