intro and main riff are the same..

Main Riff/Intro
guitar 1
E|------------------|
B|------------------|
G|5-5-5-5-5-\3-3-3-3|
D|5-5-5-5-5-\3-3-3-3|
A|5-5-5-5-5-\3-3-3-3|
E|3-3-3-3-3-\1-1-1-1|

Second Riff
guitar 2 (im sure there is an added effect to this guitar but I'm not sure)
E|---9-9-----9|
B|------------|
G|-10-----10--|
D|11----11----|
A|------------|
E|------------|