Ninja Gaiden Sigma 2 - Platform: Playstation 3

Chapter Challenge mode:
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Successfully complete the game to unlock Chapter Challenge mode.


Master Ninja mode:
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Successfully complete the game on the Mentor difficulty to unlock the Master 
Ninja difficulty.


Mentor mode:
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Successfully complete the game on the Acolyte or Warrior difficulty to unlock 
the Mentor difficulty.


Team Mission mode:
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Successfully complete the first mission in Story mode to unlock Team Mission 
mode.


Silver health bar:
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Successfully complete the game to have a silver health bar.


Gold health bar:
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Successfully complete the game on the Master Ninja difficulty to have a golden 
health bar.


Music test:
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Successfully complete the game to unlock the "Music Test" option at the options 
menu.