There is lots of gore all throughout the series

There is quite a lot of blood including slashes and sprays. The jaegers (vampire hunters) sometimes cut of arms and even legs from the vampires

Occasional cussing not many on use of dumbass in ep 3 and frickin in ep 4 also a use of what the hell in ep 5, son of a b**ch and what the hell used both once in ep 10 also some uses of dam* in ep 12 there is a use of bas***d

There was a bar that they would go into but not very occasionally. There was also some characters that smoked