Also, you I suggest you make some trigger actions, for example making a light switch, place a trigger there, and in Kismet connect it with the light coming from the lamps on the ceiling. Till you don't switch it up, you can still see, if you place some free lights everywhere.
Or another idea: Make a door, place a trigger at the door, and when the trigger is activated(make it in Kismet), a cinematics happens, the door opens, and when you leave the trigger zone it closes. Get some cool horroristic noise for it.
Now you got a door opening with sound and light switches everywhere!
Much more fun game, isn't it?
Don't forget to tick out that the action can happen more then once!