Very different storytelling style from the other Necromunda novels, in a good way! The usual Necromunda/sci-fi fantasy storytelling, where the story rotates each chapter between antagonist and protagonist, was kind of done away with.
Instead, the setting and story are set-up, and the plot is mostly set out, with the reader pretty much anticipating the ending from early on. As Nooker says, the plot is therefore predictable, but I think that was part of the concept.
From there on you get the daily goings on of a gang working their territory, told from multiple points of views (in fact about 8 or so different views, from different gangers), and the story is fleshed out using flash-backs/flash-sideways views of recent events.
It's cool in a way in that it gets into the nitty gritty of gang life and gives different perspectives, from juves, to seasoned-gangers, to leaders, and the villagers caught up with the gang. The flip side, is it doesn't cover much ground in terms of time scales and development, but as I said, I don't think it was the point here.
I quite enjoyed the idea of the Ash Wastes flooding through into this part of the Underhive. I didn't get the feeling that the author felt the Ash Wastes were only in the Hive. I thought overall he did a great job of describing the underhive as the set of decrepit and crumbling domes we have come to know and love.