The only thing I've seen from it is the trailer but today Polish website Opium released a clip from it and I don't know, since I haven't seen it, if it's an actual scene or a collection of shots, some of it is coherent and some of it isn't. But it's been said that the film is highly experimental and trippy so that might actually be a scene from the film, what it means I have no idea but it looks incredible.
Valhalla Rising clip online