In the car chase mission when you must save Dubois, instead of chasing him in your yellow car, run diagonally (up and left) until you get in front of the escaping car. The car will hit you every time you get in front of it. Note: Make sure you have enough energy for this trick. With practice and good timing, instead of the car running you down, it will knock you up on the hood. Once on top of the hood, duck down and aim for the roof with the weapon of your choice.