The game is also getting its first expansion, Tunnels of Terror, on April 12th. Turtle Rock Studios President and General Manager, Steve Goldstein, said: Tunnels of Terror is set to add an all-new co-op activity known as Ridden Hives, where players will explore seven different dungeons full of labyrinthine tunnels below the depths of Evansburgh that are infested with a new Ridden type, the Warped Ridden. Riddens include the landmine-setting Urchins, monstrous Shredders, and damage-dealing Rippers. All of them will be available in the Player versus Player Swarm mode, too. Back 4 Blood is also getting two new playable Cleaners, the axe wielding firefighter Sharice and the restaurateur Heng. Furthermore, Tunnels of Terror adds eight exclusive character skins, seven new legendary weapons, 12 new weapon skins, new cards, and more. Alongside the paid expansion, Back 4 Blood will receive a free update adding the No Hope difficulty setting for those looking for an extra level of challenge. It’s worth noting that the playable content coming with Tunnels of Terror will be accessible by everyone in a party as long as a single player in that party has purchased the expansion. Here’s our Back 4 Blood review, in case you missed it.