On the co-op front, the biggest feature is the inclusion of all six Anarchy maps from the DLC, bringing the total up to 12. The co-op mode was something different within the realm of horde/wave-based modes as players not only had to worry about avoiding death but also trying to max out their score in order to progress to the next round. The best way to do this was to get Team Skillshots, like having one player kick an enemy and another one shooting it.