Ninja Gaiden Sigma 2
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.
