So, back on the Nintendo there was a game which my uncle owned that was an action game seemingly with levels broken into three parts. The first part had silhouettes walking by a window and you needed to break into the window while no shadows were walking across it. Then you'd swing inside, breaking the window to enter. If you made a mistake and there were guys there, they'd shoot and kill you and you'd lose a life. Otherwise you'd be in the building and need to be sneaky to complete your mission.
Any ideas on the name of this game? It's a really good one, and we'd play it for hours.