Heavy bending on two strings
e-------10^11
B------------
G-11^12------
and let it feedback! In other words GO NUTS!!
Then the mother of all chords: Em

Em
x
x
x
2
2
0

Sometimes you play this (listen to the record)
x
x
x
2
2
3

in between riff
A---------------------
E-3-3-5-5-7-7-8-7-8-7- and Em
This riff could be played above a G (3554xx)

That's it!