">" = strum
For the main riff, he plays the same thing over and over, except he 
changes the last 2 notes every time. So here are all the different 
versions of the main riff:

G:-----------------------
D:-----5-----------------
A:-3-3---3-5----5-5------
E:-----------------------


G:-----------------------
D:-----5--------5--------
A:-3-3---3-5------5------
E:-----------------------


G:-----------------------
D:-----5-----------------
A:-3-3---3-5----3-5------
E:-----------------------


G:-----------------------
D:-----5--------5-5------
A:-3-3---3-5-------------
E:-----------------------


G:-----------------------
D:-----5--------5--------
A:-3-3---3-5------3------
E:-----------------------




the other part: (i think this might be wrong...)
G:-----------------------
D:------5>---------------
A:--3>-------------------
E:-----------------------