In the bitter chill of a Buffalo winter in 1992, Eternal Torment unleashed their debut and defining artifact: their self-released four-song demo tape. At its heart were “Annihilation of the Masses” and “Temptation of Mind Shutdown,” two brief but devastating blasts of raw aggression, followed by “Infinity Domain” and “Transitional Chaos” — each track a razor-edged plunge into death metal’s darkest depths.