Use your throwing star to hit the shields and clear each level. Each level starts with your ninja on a small platform. You will see the shields in the air in various locations. There is one golden shield that you want to hit to complete the level. Click and hold to build up power in your throw. The bottom of the screen shows how many throwing stars you have left, how many shields you have sliced, and how many shields the level started with. You get more points the quicker you complete each level. Click Reset Level if you don't have enough stars to complete the level.