Intro pt 1
G----------|
D-20/8-----|
A----------|
E-----6----|

Intro pt 2
I think the bass was tuned down a half step, so this is the part an octave up

G---------------|
D-8--8----------|
A-------6-6-8---|
E---------------|

Main Riff

G--------------------------------------------------|
D---8-----------8-------8--------------------------|
A------8h10p8s6------------8h10p8s6--6--6h8--------|
E-6-------------------6----------------------------|