We’ve had a whole year to paint every surface in Killing Floor 2 with the red and squishy insides of those nasty Zeds. It’s been fun mulching monsters with my mates, covering their sixes and taking time between each firefight to gently wipe the blood from their face while I give them a friendly pat on the bum. We’re blood brothers and sisters now, and nothing gets between that.

Okay, I fibbed. Friendship is a fleeting, amorphous thing with a definition and value that varies depending on the person. It can erode over time, so it’s totally okay if you’re thinking about speeding that process up a bit with Killing Floor 2’s new versus mode.

Revenge of the Zeds gives players like myself the chance to find our former comrades on the battlefield so we can promptly set about making a messy meat pie out of their tummies. We’ll do this because we’re monsters, and monsters don’t know what it’s like to cup the ass of a friend to give them the strength they’ll need to survive. Monsters can’t understand that, all they know is what the mad scientists at Horzine Biotech designed them to do, and that mostly involves killing things.

The versus mode takes a page from the book Left 4 Dead has yet to finish by dropping two teams inside a locked arena and leaving them in there until they’ve sorted out their differences. The update also comes with various technical improvements, a handful of weapons and a map, the prison, which you can check out below.