This novel was well paced and practically each chapter ended with a cliff-hanger. Usually it was hard to put the book down. The subject matter was interesting and the characters were sufficiently diverse and fleshed out. The characters were believable in that they were not the ultra heroes of years past. . . you know, the ones that spoke 19 languages, had half a dozen college degrees, were jet pilots and world class marksmen on top of being master ninjas and beer brewers. Yes, them. The characters in this novel were not like that though. They were mainly normal people who were unfamiliar with firearms, not very physically fit, and scared. While this is a bit more believable in terms of the protagonists themselves, it is a lot less believable that they would be in such situations-let alone remain there however. I had to suspend disbelief a bit for that.
Speaking of disbelief, there was this thing about characters carrying concealed swords in their shirt and coat sleeves. This was even more cheesy and goofy. It was like the author had been watching too many episodes of old TV shows like "Highlander."
Another rough edge that needed to be smoothed was that the author didn't seem to know anything about firearms. When they did come up in the novel, incorrect terminology was used and the descriptions of their use seemed rudimentary at best.
Then there were a couple of scenes in the story which seemed like over stretching. For example in one scene in the middle of a fight with a bad guy, the main character sneaks and hides a relic in the seems of his coat without the bad guy even noticing even though he's standing right there opposing him.
In general though, it was overall a good read and I'd recommend it to anyone who likes this kind of genre.