Vermintide is a Co-op action game that can be played solo. You embark on missions with friends or bots and work your way trough the environment. On the way, you get attack by waves of enemies that you dispatch in multiple satisfying ways like slashing them, bludgeoning them or burning them. The time and place of the attacks are chosen by an enemy ai, that determins when the team is vulnerable. Along with the chaff enemies, you get attacked by elite enemies with special abilities. After the mission, you get loot for your characters and exp for levelling them up. You get more loot if you find hidden items while in the mission. The game can be played on high difficulties for tactical challenge or on lower difficulties for mindless hacking and slashing. Technically speaking, it could be better optimized. Also, the loot RNG - while not unfair - can be a turn off for some people. All in all nice progression and meaty core gameplay.