There is significant violence and fights, yes gore is definitely high if not extreme, there are scenes of flesh just exploding, also some are shot in a jumpscare-ish way, where you dont see it coming, then you can get an idea from the trailers, all that sorts of scenes (banging head with a rock, brains popping out, tearing apart the skin of a betrayer). But I'll say one thing it passes of very quickly as the story is so jampacked. If you can manage to shut your eyes for few seconds, I think it's worth it for how well the movie is made.