A shallow, waterfilled central arena and some interconnected passageways around the outside should keep you looking over your shoulder for that next grenade...

A great KOH map-incredible flow (there are lots and lots and lots of ways onto the hill, and most of them have vulnerabilities). Mostly a dark room, with a well-lit hill and four well-lit sniper towers. Looks nice, too...

Big weapons are in the center, behind a wall you have to walk up to to open. (Don't get trapped inside-the only way out is to blast your way past someone else coming in.)