Intro Riff
[---/8---0-0---7-7-7-7-6-5-3--------------]
[--------0-0---------------0--5-----------]
[--------------------------------------2p0]
[--------2-2------------------------------]
[-----------------------------------------]
[--------0-0------------------------------]

Main Riff
[---0-----0---0---0-3p0----5-7-----0-----0---0-----7-7-5--3--------]
[---0---x-0---0-x-------x------x---0---x-0---0-x-------------------]
[-------x-------x-------x------x-------x-------x-------------2p0---]
[---2---x-2---2-x-------x------x---2---x-2---2-x-------------------]
[-------x-------x-------x------x-------x-------x-------------------]
[---0-----0---0---0-3p0----5-7-----0-----0---0---0-7-7-5--3--------]

Second Riff
[-----------------------------------------------------------------]
[-----------------------------------------------------------------]
[-----------------------------------------------------------------]
[-----------------------------------------------------------------]
[---5h7-5h7-5h7-5h7---3h5-3h5-3h5-3h5-----------------------------]
[---------------------------------------5h7-5h7-5h7-5h7-0-3h5-3---]


Notes:

Lots of extra notes ring out through this riff so play it a bit dirty :)

I also tend to make a near-full E maj shape like this...

0
0
1
2
x
0

so the A-flat rings through sometimes, which I hear in the studio cut.


Lastly, listen to the song for how the main riff changes.  (It's only the first half 
during the verse, dynamics....)