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Unlock Airplane Bodyguard:
Complete Headshot mode.
Unlock Nightmare:
Complete Complete Close Combat mode.
Unlock Brummel:
Defeat Brummel during game play.
Unlock The Immortal:
Defeat The Immortal during game play.
Unlock The Original Spider:
Defeat The Original Spider during game play.
Unlock The Russian:
Defeat The Russian during game play.
Unlock SWAT Leader:
Defeat SWAT Leader during game play.
Complete Headshot mode.
Unlock Nightmare:
Complete Complete Close Combat mode.
Unlock Brummel:
Defeat Brummel during game play.
Unlock The Immortal:
Defeat The Immortal during game play.
Unlock The Original Spider:
Defeat The Original Spider during game play.
Unlock The Russian:
Defeat The Russian during game play.
Unlock SWAT Leader:
Defeat SWAT Leader during game play.