i played in extreme metal bands ... and for the most part, you just mirror the guitar riff while syncopating with either the double kicks or the snare beats.
as for technique, the jon entwistle school of bass playing would help you a lot. it can be summarized as: attack the strings hard, and get a trebly tone
as for technique, the jon entwistle school of bass playing would help you a lot. it can be summarized as: attack the strings hard, and get a trebly tone