From C64CG website;

"Instructions: Unleash Snake by using joystick in port two. Controls:

Left = walk left
Right = walk right
Up = jump
Down = duck
Fire = use weapon

Proceed thru 3 scum-filled levels. The City Streets The Train Yard, where you'll find the President and The Bridge, which is your only means of escape. At the end of each level you must fight a concentration of enemies, before time runs out. Your success is indicated by the "KILL" meter in the top of the screen. You begin with 3 lives and you get an extra life at 10000 points intervals.

Story: It's year 1997. You are Snake Plissken, once a warhero, now a criminal. To regain your freedom, you agree to a suicide mission: Rescue the President of United States from the scum-infested ruins of New York.