In this cheat, you must become a medic. You also must e a counter or you will be shot quickly. First, near the counter’s loading area, there is a place call The House. There is a fireplace inside that house. Call one of your members to cover you. When you bring your member into the house, shove him near the fireplace. And his life will drop very fast. Take out your med-kit before you do this. Then when his life drop to maybe 8%, heal him by pressing the left mouse button. Do not let him die. You will see your money increasing.

Submitted by - Anonymous

To unlock the second campaign (in which you get to play as a terrorist), beat the game on any difficulty setting. On the mission select screen, select "Next" in order to get to Campaign 2.