The toolbar displays the level and the name, number of terrorists remaining, your score, your health and ammo. Once a level has been completed, the score is then calculated by subtracting damage points (made by surroundings), and adding the difficulty bonus (which is selected from the main menu before game starts). Green crosshairs mean you can shoot. Red crosshairs mean you are either hit or hiding behind an obstacle. By moving your crosshairs below the obstacle you can duck and keep from getting shot. Your weapon is reloaded automatically, but you can use the 'R' Key to reload as well. Note: Shooting an innocent will automaticaly deduct points from your current score, so keep a good look out!

Use your mouse to AIM.
Left mouse button to FIRE and move the target down to CROUCH.