I made a dueling arena for a sword battling mode. It's best with three or more people, as it adds a "Gotta keep my back away from multiple enemies." dynamic. Anyways, I crapped this out in an hour. Played the hell out of it with a couple buddies and tweaked the gamemode a little bit. I think at the moment it only has 11 or 12 initial spawns, so if you have a HUGE lobby I don't think it'll work. Anyways, here is the map and here is the mode I was using.