Level select
Hold [A] + [B] + [C] and press [Start] at the Sega logo. Hold [A] + [B] + [C] and press [Start] at the title screen. An option that allows practice on almost all levels with no Bosses will appear. Note: A Union Lizard coin (for 1 or 2 lives) will appear on almost every screen.
Extra life
Do not hit any of the ninjas during the bonus round.
50,000 point bonus
Use non-shuriken mode in the stage select.
Advance to level 3-2
Allow the introduction sequence to continue until demo mode begins. Press [Start] to begin the game at level 3-2.
Hidden extra lives
Level 2-2
Jump up and shoot an extra life where the fence starts for the second time.
Level 3-1
Walk to the far right on the third floor. Shoot the man standing on two boxes with a power shuriken. Enter the next level, then jump down to get two extra lives.