The storyline was simple enough that most readers should be able to keep up, and it was believable enough to be realistic. The only thing I'd complain about is that the situation would be considerably worse than the author portrayed, if this happened in real life. Every time society breaks down, and there is no law and order, violent crime runs rampant. The rapes and murder depicted would indeed occur just as the author depicted in the novel, however, they would be much more numerous than he depicted.
The characters were believable and likeable. I especially liked the character Pete because he was depicted as an older and wiser man than most of the other characters. The character Lina was good as well. I liked the way the author portrayed her as semi-prepared to face the reality of the country under those circumstances.
I think that this is a good attempt by an author since this is his first published novel.
I live in the south myself, so reading a book that references the highways, and cities, some of which I'm familiar with, is of interest to me.
Being a martial artist with decades of experience in the martial arts I know that the author's martial art scenes are interesting and well depicted.