It's not terrible, but I think it's a little over-done for my tastes. I'd also go for darker colors with more gray and black instead of everything being red. I like the impaled bodies, but the heads on the trees just seem kinda lame. I like that you have bones lying around on the ground, but I think they could be done a lot better. I also don't really like the trees. They should be more dark and twisted in my opinion. I normally like your tilesets, but I think this was not one of your best efforts.