It would be a miracle if you did not put a slug into another room. A shotgun, even a twelve gauge, is not going to do that. It also has the ability to clear a room without going thru anything.
It even has sound effects. How would you react to the sound of a slide racking a shell into the chamber? You can add lighting, too. A high intensity strobe light can paralize some people. And, unlike a solid beam of light that can outline you and invite a BG to "shoot here" it gives you another line of safety and defense.