Perfect World has announced that Blacklight: Retribution Onslaught is now live, which the firm is calling the “largest update ever” for the shooter. The expansion features new maps and weapons, as well as the new Onslaught mode, which features four-player co-op in which the team must survive waves of zombies. A variety of in-game item packages, including the Silver Crowbar melee weapon, reserved exclusively for Steam players, is also included. Today’s release also marks the availability of the game in Turkey. Check out screenshots of it below.