An entertaining movie, fit for a thoughtless Sunday film when you don't want to be challenged, just see action and reasonable storytelling. I think I was mostly just relieved that it wasn't claw-my-eyes-out boring or stupid, so if your expectations are low you'll have no trouble.
No, it's not as good as, say, 'Witchfinder General' or 'Black Death', but if you enjoyed those films you'll probably enjoy this one. 'Season of the Witch' is more campy, and contains more supernatural fantasy elements than the aforementioned films, but it is still quite similar. It's an entertaining B-movie.
I think it's possible for contemporary filmmakers to put together scary movies that play with 'What if medieval witchcraft was real and not just hysteria?' in thoughtful ways (q.v. Black Death)---but this movie is not very thoughtful. Still, I find it hard to hate a film where Ron Perlman gets to headbutt a demon.
This was a bore. There is no chemistry between the characters, the story stupid beyond belief, and the effects are really bad for a film made this year. Despise that, I have to admit the move actually was pretty entertaining. It's bad, oh yeah, but if you are in need for some sensless action/non-scary horror film, you have the perfect film right here.