I think it was on the Nintendo or maybe the Sega Genesis back in the late 80's or early 90's. It would have you sneaking through stages dodging spotlights and maybe guards by diving in windows and crawling on the ground. At the end of the stage you would have a sniper rifle aimed at a building and trying to shoot a figure in the window. I know it's a bad description. Memory isn't what it used to be. I've been thinking about this game for at least 10yrs on and off. Any help on the name of it