Hall of Infinite Doors

You lightly knock on the monotonous concrete wall, and hear one of the guards say " What! A noise? Hey, McDougall check that out while I win this hand" A guard smelling of alcohol stumbles out of the station and heads your way. You smack him with the butt of your gun in a fit of rage and he goes down, unconscious. You drag him to the back of the building and he doesnt make a sound. You hear " Hey! McDougall, where the fuck are you? Eh, he probably passed out or something, take his money and split it. AHAHAHA" You are left with the next tactical decision.