Main Bass Riff throughtout Just About Whole Song:

9 x before guitar enters in Intro. (Distortion pedal) [picked used by Rutmanis]

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0-1-33333-0--4-------------------------------- (Repeat)

RIFF 2:
"Yeaaaaaeeeeeeeeeeh *buzz scream 1:21*" , part where mini geetar solo comes in.
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0000000000000000000000000000000    (Fast and Heavy)

Back to Main Riff....

Then back to Riff 2 at about 2:47

At 3:45, just *** around with the distorting pedal, scratching on strings etc.... scraping down slowly.