Like many reviews, the first hour was fantastic. Really nice pace of character and story development. The second half got mediocre, but still worth watching to the end. The make-up is truly impressive. Acting is decent to good. You root for certain characters. So yeah, you get invested.
Nothing super spectacular overall (could have been!), but nowhere near as terrible as many other movies in this genre/type of movie. Don’t mind the hateful (non-constructive) critics and decide for yourself.