Vermintide is a cooperative action game set in the Warhammer universe, specifically focusing on the fight against the Skaven, a race of rat-like humanoid creatures. Players team up in groups of up to four to complete various missions, battling hordes of enemies while navigating through detailed environments. The game features a variety of characters, each with unique abilities and playstyles, allowing for diverse team strategies. Players can collect loot, upgrade their characters, and unlock new skills, enhancing their gameplay experience as they progress through challenging levels and face powerful bosses.