I bought this as a download on a whim when Amazon told me I had MP3 credit due to expire, as it turns out this cheaper download was a better purchase than Autopsy's "Severed Survival", which I bought as a CD at a greater cost.
First of all, the guitar work sounds like black metal guitar, only it doesn't.
It has that cold raspy sound we know and love but does so without sounding like an angry wasp trapped in a shed, I find that kind of sound annoying and distracts me from the rest of the instruments, and with that absent, how well written the other instruments' parts are is just so clear and obvious. Abbath's "singing", is clearly his, he doesn't sound like a generic BM rasper from today's scene trying to sound like a first wave vocalist. I listened to this back to back at work with "At the Heart of Winter", and whilst I couldn't get enough of ATHOW when I bought it, to my great surprise "Sons of Northern Darkness" sounds even better!