Bonus headgear:
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Have a saved game file from Rainbow Six: Vegas or Splinter Cell: Double Agent on
your hard drive or memory card to unlock extra headgear items unique to each of
those games available when you customize an online character.
ICS-PL Helmet: Rainbow Six: Vegas saved game file.
J-E FO Helmet: Splinter Cell: Double Agent saved game file.
PAS GT Helmet: Rainbow Six: Vegas saved game file.
Tactical Shemagh: Splinter Cell: Double Agent saved game file.

All weapons in Quick Mission mode:
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Successfully complete the game to unlock all weapons in Quick Mission mode.