During gameplay hold CTRL-SHIFT down and type these codes in:

            getdown All cars attack you. After you die, the mission is completed.
            wiggleburger Wiggles screen
            thirdnostril It improves the area of targeting!
            uzi to get a pair of them insted of the 45. in your hand. You have
            to do it just right , not too fast and not too slow or it won't
            work. It might take a few tris at first but its worth it!