Onslaught: Fight off increasingly difficult waves of enemies in this four-player cooperative game mode. Available in four difficulty levels: Easy, Medium, Hard, and the headshots-only Hardcore.
Search and Destroy: This new multi-round, limited-respawn game mode tasks one team with planting a deadly bomb, while the other team must prevent or defuse it.
Metro: This underground rail terminal is full of cover and tight spaces to surprise your foes.
Safehold: Above ground, this railway station has plenty of cover, but an open courtyard in the middle can turn quickly into a bloodbath.
Centre: A quarantined area which appears to have been a shopping centre before the infection (Only available in Onslaught gamemode.)
PREMIUM SERVER MUTATORS[]
You can now define the number of rounds a match lasts, up to 15. This applies to all game modes, even those that normally do not have multiple rounds.
Team Swap: Set whether teams swap after every round, after half the rounds have been played, or never swap at all.
Disable Join in progress: Enabling this option prevents players from joining once the match has started. In multi-round games, new players will spectate until the end of the current round and join at the beginning of the next.
Many mutators now have a "Default" option, which will cause the server to use the default setting for the game mode.
BALANCE CHANGES[]
Light Machine Gun: Spread-Aim increased from 1.26 to 1.72. Increased the initial recoil.
Assault Rifle: Reduced initial recoil, increased magnitude of recoil pattern, and reduced the size of random recoil. This should make overall recoil similar, but less random.
Combat Rifle: Reduced recoil while aiming. Increased recoil recovery.