This is your old school Infection game mode. Played on Team Deathmatch, everyone but one person goes to Blue Team while the one Zombie goes Red Team.
When someone on the Human Team (Blue) gets killed they must press F4 and return to the lobby, then move to Red Team.(Zombies) The game ends when the last human is killed.
Humans are restricted to Pump shotguns and 1911s only. No frag grenades. No Breaches. No smoke grenades. No flashbangs.
Zombies are restricted to pistols only. No primary weapons. No frag grenades. No Breaches. No flashbangs. Smoke grenades OK.
Special plate carrier for "Human" must be created. Must equip the whole bottom row with primary ammo, and the whole top row with secondary ammo.
Special Plate Carrier for "Zombie" must be created. Must equip the whole bottom row with secondary ammo, and the whole top row with smoke grenades.
Special outfit for Zombies must be worn after being killed as a Human. (Something you set with everyone in the match...)