Eliminate the other ninjas and try to grab the treasure! The black surfaces are sticky. The dark grey, metal surfaces, on the contrary, are very sleek: you easily glide away when landing on them. The yellow surfaces, that look a bit like holey cheese, are elastic: if you hit hem, you bounce. Mind the red surfaces with spikes: if you hit them, you're dead! By combining actions, for example by knocking over a white ninja and by kicking away a wooden block, you earn a bonus. Try to reach all your goals in as few jumps as possible: the less often you jump, the more bonuses you get.
Click on the ninja and hold the left mouse button while determining the jumping direction and distance. When these are good, you release the left mouse button, and the ninja will jump.