It's very good. My review:
Abercrombie's story rattles along at a fair old pace. With the characters introduced, there is no more need for scene-setting and the plot explodes with vigour. More happens in this 450-page novel than some writers struggle to squeeze into an 800-page tome, and it's all invigorating, page-turning stuff. There's a lightness of touch and plenty of humour in the writing which makes reading the book all the more pleasurable. The characters become more interesting, with Glokta particularly becoming a morally ambiguous person whom the author gives real character to, his decisive ruthlessness coming as quite a shock in some parts of the book. Meanwhile, in other parts of the story other characters undertake unexpected transformations. Meeting other people who know Bayaz forces from earlier in the world's history force the reader to reconsider their opinion of him, whilst another character undergoes a startling personality transformation which is kept quietly in the background, hinting at some darker force moving in the storyline which will be explored further in the final book of the series.
The only criticism that comes to mind is, once again, the lack of a map. This is even more of a problem in the second novel as much vaster areas of territory are covered. One of the problems of not having a map in the book is revealed by the fact that, until an offhand comment made in this volume, I was unaware that Midderland (the Union homeland and location of its capital, Adua) was an island. A second, even more minor problem is that a skirmish in an ancient, ruined city threatens to feel like the use of one standard fantasy idea too many. Luckily, Abercrombie's writing is strong enough to avoid this problem, especially as it provides some of the most memorable imagery in the novel.
Myself and a few other people from another forum had a few drinks with the author in London a few weeks back and he's a good bloke who signed books for people and held his beer well. He also accosted random people at the bar and asked them to buy his book, which was quite amusing.