excellent,best release by them i think.however blasphemy did not coin the term war metal, that was something thrust upon this style in the late 90's to difference it from what is called black metal today, back then they called themselves black metal.
Blood Upon the Altar is an indispensable classic that spawned waves upon waves of imitators. It is probably the best place to start for Blasphemy, Gods of War being more extreme and Fallen Angel of Doom having worse production.
The lyrics deal with war, blasphemy and the Satanic Ritual Abuse controversy that originated in Ross Bay and was at its most famous at the time this demo was written and released. The music blends grind, death metal and black metal to create what Blasphemy themselves termed as 'war metal' - a genre that would later form a more unique identity in the mid to late 90s.
There is an emphasis placed on the soundscape introductions to the songs, all of them rasps over keyboards, although they are throwaways at best.