I forgot how terrible the awesome AI could be. I downloaded the trial version of the Xbox 360 port of this game, and started the first level. I started shooting guards all over, entered a room, and killed one running at me. But I notice something as he falls over dead: a guard just staring out the window standing DIRECTLY behind the guy who died. I walked up to the guard and simply killed him. I was amazed I had forgotten such huge holes in the AI...