There's 2 guitars in this song, but it doesn't make a big difference.

x = Palm-mute
* = Harmonic

Dropped D-tuning


Riff 1: 

E|---------------------------------------------------------|
B|---------------------------------------------------------|
G|---------------------------------------------------------|
D|---------------7-8-7-7-7-8-7-----7-8-7-8-----------------| 
A|-0-0000-00-0---5-6-5-5-5-6-5--8--5-6-5-6-0-0000-00-0-----| 
D|-0-0000-00-0--0-0-0-0-0-0-0-0-8-0-0-0-0--0-0000-00-0-----| 
PM x xxxx xx x  x x x x x x x x   x x x x  x xxxx xx x

Fill after Riff 1:

e|---------------------------------|
B|---------------------------------|
G|-----------------------------3*--|
D|-//////////----------------------|
A|-//////////--0-0000-00-0---------|
D|-------------0-0000-00-0--1/-----|
               x xxxx xx x


Riff 2:
(let all chords ring)
e|---------------------------|
B|---------------------------|
G|---------------------------|
D|-------------------///-----|
A|-8-0-7-10-0~-------///-----|
D|-8-0-7-10-0~---------------|

Riff 3:

e|------------------------------------------------|
B|------------------------------------------------|
G|------------------------------------------------|
D|--------------------------------3-1-3-6-1-------|
A|-0000-0-00-0000-00-00000-00-10/-3-1-3-6-1-------|
D|-0000-0-00-0000-00-00000-00-10/-3-1-3-6-1-------|
   xxxx x xx xxxx xx xxxxx xx 

Riff 4:

e|--------------------------------------------|
B|--------------------------------------------|
G|--------------------------------------------|
D|-8/7777777/10101010-------------------------|
A|-6/5555555/8888888--777777/10101010-888888--|
D|--------------------777777/10101010-888888--|
                 
Riff 4 fill:
e|---------------------------------------|
B|---------------------------------------|
G|---------------------------------------|
D|-8/7777777/10101010--------------------|
A|-6/5555555/8888888--777777-00-10-00-8--|
D|--------------------777777-00-10-00-8--|
                             xx    xx
I Think that's all the riffs, but i know i missed some fills, but you should be able to figure them out.


Tab: Igor Anacleto