Double Dragon

Sign of the Dragon.

One of the most powerful games ever! The outstanding graphics take you through six screens of a daring attempt to rescue a young woman captured by a ruthless stree gang.

"Spike" and "Hammer" are the heroes that must save the kidnapped woman. One player can fight alone or two players can fight as a team. If play stops before the rescue is complete, the game can be continued from that point by adding additional coins. The graph at the bottom of the screen indicates power.

Source http://flyers.arcade-museum.com/?page=thumbs&db=videodb&id=319