This is a Choose-Your-Own-Adventure style book, so I did not read every possible outcome, just enough to get a feel. I hit about six endings, half good and half bad.
Like a lot of this style of book, the choices end up being pretty random. There is no real winning strategy, and at one point taking bold action leads to doom, where at another, you're killed for trying to play it safe.
The zombie apocalypse presented in the story is generic by necessity. It needs to resemble the expectations of the reader because there is only three pages of setup to get the mayhem started, so any deviation for cliche would be a distraction. But the result is, of course, a pile of cliches.
Since the story is written for a younger audience, it avoids extremely graphic gore, but has enough horrific moments to stay true to the intended genre.
This is serviceable for what it intends to be, but it is not interesting.