The simplest way to describe the sound is to say "Rammstein", but that's cheating a bit. The fact that they sing in Swedish makes them pretty unique, and they are sometimes heavier and faster than Rammstein. The mix of electronics and guitars are there though, and Hulkoff's vocals are in the same baryton as Till Lindeman.
This is a debut album, and a very strong one. Almost every track is memorable, with catchy melodies, harsh vocals, electronics and heavy as hell guitar riffs. "Änglar" is the band's statement on religion, and my personal favourite, along with the title track "Det finns bara krig" ("There Is Only War"). This band's popularity has flared up like a bonfire lately, and what's more, I haven't met anyone who doesn't like what they hear. So do yourself a favour and check them out while I go back to headbanging to the blissful chaos of "Götterdämmerung".