47. Bathory - Bathory - (1984)
This album is a pure, lo-fi blitzkrieg of hardcore punk fury and metal riffs. Nothing complex going on here, just primitive speed/thrash/black metal with riffs so catchy they could be in pop songs in some twisted, alternate universe. For my money, this is also the first true extreme metal album ever recorded. The aggression and abrasiveness are just a step above Hellhammer and Venom, and those vocals are just too necro to be anything but extreme metal vocals. Even Slayer weren't quite as ****ed up as this by this point in their career. Simply one of the best metal albums ever recorded.