On the negative side, there is a lot of telling rather than showing and a large number of infodumps. Worse, many of the infodumps are repetitive, telling the reader something he has already been told in a previous infodump. The characterization is rudimentary. The hero is heroic, and the chicks all immediately dig him. The dialog is nothing special. The plot is nothing if not straightforward.
On the positive side, the story moves right along, and there is a lot of action, at least when the reader isn't being force fed information. About the cleverest thing in the book is its use of the Wandering Jew and related legends, which I won't reveal to avoid spoilers. The author manages to insert a small amount of humor.
The writing is at the level of the better amateur stuff that can be found online for free. I didn't hate the book, but I could understand it if another reader did.