Chivalry is a first person slasher that only looks awesome.
Its set in some fantasy made up place but who cares when you can chop up and mash people with a pretty badass weaponry. And there's objectives like village raids (burn down the village, kill peasants etc) castle/fort assaults. But, most importantly, is the extremely deep close combat.
I do not believe there will be single player campaign, since its designed to be a multiplayer game but you can have battle against and with bots. And its still in alpha too. And they won't let me give them money because theres no pre ordering yet