Level select:
Hold Up/Left + A on controller two and press Start on controller one at the title screen to select a one player game. The phrase "Round 1" will appear on the screen. Press Left or Right to change rounds and Start to begin game play.

Fifteen lives:
Press Up(2), Down, Left, Right, A(2), C at the starting screen.

Transform into the mechanical robot:
Rescue the indicated hostage first when playing the corresponding level.

Level 2-1
Rescue the girl in the window located in the upper left. Jump and get the shooting star that will appear.

Level 2-2
Go to the top of the garage and rescue the only child at this location.

Level 2-3
Enter the elevator and go up one floor. Rescue the child on that floor to get the shooting star.

Level 3-2
Rescue the first girl located behind the rock.

Level 3-3
Go to the left side of the waterfall. Look up and rescue the child above this location.