The aim is to show off your Ninja skills and collect all the power-ups scattered all over the different platforms as soon as possible.
You have to use your grapple to cling to the platforms and collect the power-ups. Throw your ninja sack to trap the guards and push them off the high platforms to kill them.

Instructions:

Move Left : Left Arrow Key
Move Right : Right Arrow Key
Adjust Grapple/Sack Angle : Up and Down Arrow Keys
Jump : Space Bar
High jump : Hit Space Bar 3 Times Shoot and Clinch Grapple : Hold Ctrl Key
Adjust Grapple Length : Up and Down Arrow Keys while Holding Ctrl
Shoot Ninja Sack : Shift Key