Alex Kidd in Miracle World

Your name is Alex Kidd. You have courage . A karate chop that shatters rock. And a big job to do. You learn that the mysterious city of Radactian is in great danger. All your skills and talents are desperately needed to help. But there's a catch: how do you get there? Your only clues are a puzzling map and a medaillon made of Sunstone. Will that be enough to solve the riddle of the pathway?