I enjoyed the book! It definitely has a slow start, but it pays off in the end. I liked the 1960s storyline quite a bit, but I feel like the 1980s storyline was underdeveloped and kinda unnecessary. Most of the time jumps were kinda jarring, and it might have been better to make most of the book chronological (except for maybe the prologue/part 1 at the beginning to build up interest). 

I really like the idea of a spaghetti western horror. The creatures were cool (especially the one made up of a bunch of different animal parts), and I really liked the main characters and their chemistry. The gory descriptions were pretty great and disturbing. I do think that this book was trying to do a bit too much, and I think the cult itself got pushed to the backburner.