Sierra has announced more of the "all-star" level designers who are contributing deathmatch levels to the Half-Life add-on Opposing Force. In no particular order, they are Richard "Zdim" Carlson, David "Kevlar" Kelvin, Marin "Kandyman" Gazzari, and Eric Reuter. These four join Levelord, who was announced a while back. If you don't know who some of these guys are (shame on you), check the press release, which has full details on all of them.