Riff 1
E|-11-9-8--11-10-8--12-11-9-8-|
B|----------------------------|
G|----------------------------|
D|----------------------------|
A|----------------------------|
E|----------------------------|
Ok, so I'm not too sure about this high pitched bit, but hey, 
I'm only human.

Riff 2
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-7--5-4-3-2---------------|
E|-5--3-2-1-0---------------|
Comes in when first bit has been played about three times.

Riff 3
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-2-3-5-7-8----------------|
E|-0-1-3-5-6----------------|
Basically, this is the ending of riff 2.

Riff 4, main riff
E|----------------------------|
B|----------------------------|
G|----------------------------|
D|-------9----9----9----9-----|
A|-0h5h8-7----7----7----7-----|
E|---------00---00---00-------|
          **   **   **
This bit first then 4a. Endings are the same.

Riff 4a
E|---------------------------|
B|---------------------------|
G|---------------------------|
D|-------9-----9-----9-----9-|
A|-0h5h8-7-----7-----7-----7-|
E|---------000---000---000---|
          ***   ***   ***
first ending
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-8b-----------------------|
E|--------------------------|

second ending
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|-7------------------------|
A|-5-8----------------------|
E|---6----------------------|

Riff 5
E|--------------------------|
B|--------------------------|
G|-------------10-----------|
D|-7-9-10---10----10--------|
A|-5-7-8--------------------|
E|--------------------------|

first ending
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-8-7-5--------------------|
E|-6-5-3--------------------|

second ending
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-5-7-8----8--8--8---------|
E|-3-5-6----6--6--6---------|

repeat riff 4
repeat riff 5

Riff 6
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|----2---------------------|
A|-2----2-1-xx-2------------|
E|-0--------xx-0------------|
Over this the second guitar plays this bit I think one octave higher.

Riff 7
E|----------------------------|
B|----------------------------|
G|-4-7-5-9-7-10---------------|
D|-2-5-3-7-5-8----------------|
A|----------------------------|
E|----------------------------|
One guitar plays this while other does solo-ish bit.

Repeat riff 4
Repeat riff 5
Repeat riff 4
But the ending of riff 4 here sometimes becomes this:
E|--------------------------|
B|--------------------------|
G|--------------------------|
D|--------------------------|
A|-10-----------------------|
E|--------------------------|