My rank shall be Elitist.
Doom Metal:
A tank slowly rolls over you. Never speeding up but never stopping, and crushes you into the earth.
Traditional Metal:
A man with a sword on a horse rides you down at a canter and splits your skull down to your teeth.
Power Metal:
A man in full plate armor on a horse also in full plate, rides you down at full gallop and breaks a lance off in your heart.
Thrash Metal:
Some guy beats you to within an inch of your wretched, miserable existence.
Death Metal:
Some guy beats you to death.
Black Metal:
A wizard beats you to death within the confines of a magic circle, trapping you inside. He then summons a demon from the Outer Dark to consume your soul as well.