Nicely framed, as the best Space Wolf stories often are, as the retelling of a saga by a hoary old Skald, this goes in different directions to those you may expect. A large section of the story, Ragnar in the Underverse, is as much an internal metaphysical struggle as anything else, though the second half of the book more than makes up for this in the action stakes.
The performances for the Fenrisians are all great, if a touch indistinct at times, and I’d have happily have spend longer seeing events in Ghazghul’s camp than we do, but this remains an interesting curiosity.