by "extreme" i mean anything that would get a 10-11 on the tvtropes mohs scale of rock and metal hardness

• Anaal Nathrakh - You Can't Save Me, So Stop Fucking Trying
• Arsis - A Feast For the Liar's Tongue
• Dehumanizing Itatrain Worship - Song of the NEET
• Lugola - Parade of Death
• Phyllomedusa - Voodoo Bled Cacosternum
• Portal - Stow
• Strapping Young Lad - Oh My Fucking God
• Street Sects - In Defense of Resentment
• Terrorfakt - Ich
• Throbbing Gristle - Hamburger Lady
• Uboa - Please Don't Leave Me
• Gnaw Their Tongues - Ten Bodies Hanging