I feel the reveal/twist was really rushed and while kinda cool, was forced. I think the atmosphere of everything else is great. My biggest thing is how does he have Sun-Ah in him? Did she die and he ate her right as she was dying or did she live and he still devoured her? Does he just live or is he eliminating his own species? Some of those are fine being open ended, but I do think the twist was just kinda thrown in there. Still executed ddecently with aftermath but yeah