If you would be a ninja, you must walk the path.
Stay alive by crossing each board before time runs out. Do well enough and additional characters will be unlocked. A ninja sees the path and follows it. Dont run out or youll be toast!
Use the Time Warp and Eye of the Ninja to aid you on your path. The Time Warp gives the ninja extra time. The Eye of The Ninja shows the ninja the true path.