GunMetal Cheats (Xbox)

Click the Left Analog Stick, then press White, White, Black, click the Right Analog Stick,
then White.

At the title screen, click the Left Analog Stick twice, then click the Right Analog Stick
twice, then press L, R.

Go to the mission select screen, and click Down on the Left Analog Stick, then press
Black, R, click the Right Analog Stick, then press White, then L.