Blacklight: Retribution received its first content patch on PS4 today, and among many new bits is the introduction of cooperative game mode Onslaught.
Onslaught pits four Blacklight Agents against hordes of the infected, and each wave has a changing threat.
New multiplayer maps Decay and Metro have been added: Metro is set in an abandoned subway station taken over by squatters, while Decay is a slum fortress set deep in a rundown area of the city.
Private Matches have also been introduced via private servers and Matchmaking improvements have also been implemented along with game optimizations.
More information is available on the PS Blog.