Play as a soldier being sent out on a dangerous mission to fight rebels loose in the city. Get dropped off at the different locations via helicopter and fight your way through the masses. Use the mouse to aim and shoot, the space bar to reload and press the S key to duck under cover while under heavy fire. Shoot and kill as many enemies as possible and wait for the helicopter to arrive. Press the Enter key to escape when this happens and be taken to the next location. Keep moving from place to place as you fulfill your mission.