late 80s early nineties arcade game. 1. game was either a side scrolled or up scrolled 2. you start off with weak weapon and then find better weapons as game goes along best weapon is almost a ball and chain that fires a laser ball out the end. 3. you walk on the ground 4. some levels you can fall off the edge on a maze like map(no walls just platforms) hope this is enough I can picture the game in my mind. Thanks