The whole explaining why the world is ending bit is rather terrible. On a scale of one to ten it’s a solid one with all of it’s craptastic pseudoscience that any one who passed basic sciences in highschool would know is garbage.
A zombie particle? Seriously? A random zombie outbreak makes more sense than this origin story for the outbreak.
The author tried to reinvent the wheel, he ended up with smoking wreck. Hope this isn’t indicative of the rest of the story.