https://www.gamespot.com/articles/xbox-one-game-pass-adds-the-just-launched-warhamme/1100-6460360/

After coming to PC in March, Warhammer: Vermintide 2 has officially launched on Xbox One. And if you're a subscriber to Microsoft's Game Pass service, you can play it for free. That's good news to anyone who wants to help fight off a rat infestation.

A sequel to Warhammer: End Times - Vermintide, Vermintide 2 is basically like Left 4 Dead in a Warhammer setting. It takes place in the apocalyptic End Times. You and three companions must fight through 13 levels to survive against Chaos soldiers and hordes of humanoid rat creatures called Skaven. You do so by arming yourself with an array of medieval and fantasy weaponry (plus a few guns) and hacking, shooting, and magic-blasting them to ribbons.