Hold Up, Left and A on Controller Two while you turn the game on. While
holding these buttons, press Start on Controller Two. Then push Start
on Controller One and select a one-player game. After pushing Start, you
will see the words, "Round 1." Press Left or Right to select the levels
and push Start.
By rescuing the children in the correct order, you can become the
mechanical robot. Here's how to rescue them.
In round 2-1, if you rescue the girl in the window located in the Upper Left
first, a shooting star will appear. Jump to get the star and become the robot.
In Level 2-2, go to the top of the garage and rescue the only child up there.
In Level 2-3, get in the elevator and go up one floor. Now rescue the child
on that floor to get the shooting star.
In round 3-2, rescue the first girl, located behind the rock.
In level 3-3 go to the Left side of the waterfall. Look straight up and rescue
the child above you.
In all of these cases, the child-hostage noted must be the first one
rescued when you reach that level.