The following cheats can be purchased in the Bonus-menu.

Faster movement - Spend 450 intel points
Ghost-mode - Spend 250 intel points
God-mode - Spend 600 intel points
Infinite ammunition - Spend 600 intel points
Infinite items - Spend 400 intel points
Invisibility - Spend 600 intel points
More damage Spend - 250 intel points
One-shot-kills - Spend 450 intel points
Team-God-mode - Spend 450 intel points