E|----------------------------------------------|
B|----------------------------------------------|
G|-8---7-----------------5----------------8---7-|
D|-------5h7-7-7-5h7-5h7---5-5h7-7-7-5h7--------|
A|6---5----------------------------------6---5--|
E|----------------------------------------------|
At the end of that riff, this is also played.
E|-5/8\5----5/10\8----|
B|--------------------|
G|--------------------|
D|--------------------|
A|--------------------|
E|--------------------|

Riff 2
E|----------------------------------------------|
B|----------------------------------------------|
G|8-7----------------5---------------------8-7--|
D|8-7-5/7-7-7--7/5\7-5-5---5/7-7-7-5/7-5/7-8-7--|
A|6-5-5/7-7-7--7/5\7-3-5---5/7-7-7-5/7-5/7-6-5--|
E|----3/5-5-5--5/3\5---3---3/5-5-5-3/5-3/5------|
Play that as many times neccessary.

Riff 3a
E|----------------------------------------------|
B|----------------------------------------------|
G|------7-------9-7-------7--9-7-----9-7--------|
D|7/9-9-7-7/9-9-9-7-7/9-9-7------9-7----9-7-----|
A|7/9-9-5-7/9-9-7-5-7/9-9-5---------------------|
E|5/7-7---5/7-7-----5/7-7-----------------------|
Play riff 3a and then riff 3b twice 
(ie. play riff 3a, then riff 3b then riff 3a then riff 3b)
Riff 3b
E|----------------------------------------------|
B|----------------------------------------------|
G|------7-------9-7-------7--9-7-------7~-------|
D|7/9-9-7-7/9-9-9-7-7/9-9-7------9-7-9----------|
A|7/9-9-5-7/9-9-7-5-7/9-9-5---------------------|
E|5/7-7---5/7-7-----5/7-7-----------------------|

Then, at 3:35, just play this :)
Riff 4
E|------------------------------------------|
B|------------------------------------------|
G|---------------------------------8-7------|
D|5/7-7----------------------------8-7------|
A|5/7-7-(p| lay this chord 14 times)-6-5------|
E|3/5-5-------------------------------------|