In comparison with the previous 2 books in "The Dwarves" series, I found this one disappointing. [this review may have spoilers from here]
For one thing, it drag on entirely too long --- a more engaging story might have just as possible in a book about a third to half the length of this one. Any fantasy series has to have a certain amount of world building within it for the story to have a background and make sense. In this book's predecessor, "The War of the Dwarves", so many of the main characters and even entire races are wiped out such that its successor, this book, has to spend a lot of time doing "world rebuilding". It makes for a plod in much of the book.
The book goes off into too many different plot threads --- makes it unfocused and, again, a plodding narrative.
The protagonist in "The Dwarves", Tungdil the Dwarf, is portrayed in ways that seem uncharacteristic of him from the previous books. He's a drunk and a slob in the beginining --- and, after taking forever, the book finally goes into why that is. Then he cleans up ---- only to cheat on his wife, Balyndis --- whom in the previous 2 books was built up as the love of his life. The reason: the one that I've heard almost everyone cheating on their spouse claim as the reason, loss of passion. Ok, I understand that happens, but this is fantasy, Tungdil's the hero, and you just spent 2 massive books previously building up the relationship between these 2, only to cast Tungdil now as a self-centered, incontinent flake. I didn't like this at all, notwithstanding that the book does ok in salvaging the damage it's done to its main character in the first half or so of the book.
It brings back one of the main characters from the first book, Lot-Ionan, perhaps best considered as the series "Gandalf" or "Dumbledore" --- but then does a lame job, in my opinion, of making use of him as a dynamic character.
Another gripe I have with the book is its tokenism. The previous book introduces female characters in assertive, dynamic roles, yet retains their feminity ---- they're not just masculine characters with female parts ---- they're women pushing their physical limits, yet you never forget that they're women responding in ways that a woman of great intellect or physical ability might, yet in a woman's way --- can't really articulate it any better than that --- except that it seemed believable whereas this book's way does not. Many female characters here more like the book version of NPCs --- wooden, contrived, and almost seemingly inserted into the text to even out the numbers of males vs. females --- almost as if an editor went to Heitz and said you need more masculine females here, here, and here. It doesn't work in my opinion. When you do things like that, all you end up with is a generically masculine cast that makes for a less interesting read.
The book has good action sequences, just not enough to keep it going.
It's an ok book if you really love the Dwarves series. It's mildly entertaining, but, if you've got other choices to choose from, you're not missing a whole lot going with them, instead of this one just to continue the series.