Okay Gary.
I'm gonna try and be constructive with this review, because I think you deserve some solid advice on how to take a great book for the zombie genre, and twist it into something that loses credibility pretty quickly. Try not to be beaten up too bad on this. First off, Goodreads says a 2 star review was 'it was okay,' and a one star review is 'I didn't like it.' I went with one star here, but on Amazon I'm thinking I'll give your book two stars. We'll see.
I loved parts of this books. The simple scenes of survival and how Alex plans and plots were solid. Great genre writing. I also thought the gore writing was well balanced. Not hack-tastic, nor too light. Great balance, good job. Your gun stuff is decent as well. No major flaws, and not overdone either. Your cover ROCKS. You'll sell copies just on that alone. I should also add that the first chapter is SOLID. Like, very inviting, and it made me want to dig right into the book. Kudos on that.
A trio of things deep sixed this book for me, and for some others based on the reviews.
Stilted dialogue. Some of the characters speak with far too little emotion given their situations, and many of them say things that are very cliched. Typical hero line fare is more common than it could be. Work on making your dialogue sound more like how people talk, and less like how people with a script for a radio serial sound.
The wolf. I didn't count, but the word count dedicated to how many times Alex talks about being the 'alpha wolf,' or says 'don't show fear' has got to be more than it needs to be. The first few times was fine, acceptable to me, and even expected. But to have the same conversation come up with every new character does not add to the story in the least. You're literally repeating yourself.
Last of all... the sex. I believe I counted four graphic sex scenes, but to be honest, after the second, I was skimming over stuff that looked like a sex scene. I cannot emphasize enough how much a truly erotic sex scene doesn't belong in a book about the apocalypse. If you want to do it short, and have it be tasteful and emotional that's one thing, but to go into the detail you go into not once, not twice, but like four times... was a bit much. Never mind the set ups for these scenes. A blowjob between two total, filthy strangers? I mean hell, the main character sleeps with two different women after losing his wife within days of each other, and it isn't even a big deal for him. Sure, he protests, but man... It just rang false.
Here's a genuine bit of good news: you can write some hella sex scenes. Switch up the genre, lean heavily on that kind of writing, and you are gonna make some money, and I mean that.
I wanted to love this book after the sex scenes, but just couldn't take it seriously. Sorry. Wish you the best.