Dead Space - Extraction - Platform: Wii

Challenge mode levels:
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At the title screen, press Down, Up, Left, Right two times, Left to unlock four 
Challenge mode levels. If you entered the code correctly, you will hear a sound.


Expert and Impossible modes:
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Successfully complete Chapter 10: "Secrets And Salvation" to unlock the Expert 
and Impossible difficulty.


Switching weapons:
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Normally you cannot change weapons except by picking up new ones. To access the 
weapon selection screen, quit the game, exit to the main menu, then resume the 
level. Note: You will only have the default amount of ammunition for the 
selected weapon and lose your previous stock. You can only choose one weapon, 
and will lose the other two special weapons.