Book Silent Scope
The Silent Scope Arcade Game has three modes of play: Target Practice, Time Attack, and Story. Target Practice lets you practice your sniper skills; Time Attack challenges you to clear several stages with a fast time and a high accuracy rating; Story mode has a variety of intense missions.
Each mission has a tough boss enemy that requires a great deal of skill to take down. Your life meter will go down each time you are hit or accidentally kill an innocent bystander. You can restore lost health by being a voyeur and sighting “interesting” side events.