These are the only chords you need to play the main riff of the song:
E|-5---9---8--7--------------------------------------------------------------|
B|-5---9---8--7--------------------------------------------------------------|
G|-6---10--9--8--------------------------------------------------------------|
D|-6---10--9--8--------------------------------------------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|
The last 3 chords are played pretty fast and the first chord carries most of this riff