The whole song is based around a main riff it is quite simple
Tunng:DGDGAD (open G)
x=slap the strings with thumb in a percussive style
h=hammer ons
/=slide up
Intro
D|--------------------------------------------------------------------|
A|--------------------------------------------------------------------|
G|--------------------------------------------------------------------|
D|--------------------------------------------------------------------|
G|--x-4-x-0h5h7x5-------x-4-x-0h5h7x5-------x-4-x-0h5h7x5-------x-4-x-|
D|5-x---x------x----0h5-x---x------x----0h5-x---x------x----0h5-x---x-|
D|----------|
A|----------|
G|-5/7-5/7-5|
D|----------|
G|-5/7-5/7-5|
D|----------|
Rest of the Song
D|--------------------|
A|--------------------|
G|--------------------|
D|--------------------|
G|----x-4-x-0h5h7x5---|
D|0h5-x---x------x----| repeat until end
bits in but you should be able to get away with it like this
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