When the game has loaded select your control method at the options
        screen as usual.  Instead of going to {Start Game} press 'ESC'.
        Wait for the high score chart with the picture of the T-1000 to
        appear.  As soon as the last digit is printed on the high score
        chart, click the left mouse button with precise timing (0.19 seconds after).

        Once you've started playing you'll notice that a gunpowder and
        energy reading is displayed for player two. Now pause the game (press 'P' not 'F1')
        and type in all the function keys in order F1 through F10 to skip the current level.