Like any anthology, this is a mixed bag of quality. None of the stories in the book are bad, but only a couple are really good. Of the Warhammer 40,000 fiction I’ve read so far (admittedly, not a ton), this is probably the weakest, overall.
The first two stories were probably my favorite. Generally I find 40K fiction is best when it focuses on the ‘little guy,’ as opposed to Space Marines or some of the more obvious elements of the tabletop game.
For those who read a lot of 40K literature, there are some stories connected to popular series like Graham McNeill’s Ultramarines and Dan Abnett’s Eisenhorn.
It’s not a bad book, and if you’re a fan it’s worth checking out. However, it’s also not all that great, so I wouldn’t recommend going out of your way.