Aggressor was founded back in 1989 when their first rehearsals started. In the beginning of 1990 they "released" their first demo "Indestructible". Their first official gig was on April 17 1990; then a year later they recorded the 2nd demo. At the end of 1992 Aggressor recorded their first MC "Procreate the Petrifications". After that, they played several gigs in Moscow, Russia.
Regarding on the sound of this album it is seen as being the heavest and having the most unclean sound. this could be because of many reasons: 1. The band had a small buget so they could not get a professional clean sound. 2. Their heavy Trash Metal influence. 3. Because they wanted to keep with the Death Metal they had decided to play. It cound be all the reasons stated above.
"Legal Requirement" and "Procreate The Petrifactions" are the singles from this album.