This is probably 95% correct. There were so many corrections that I decided just to submit a new tab instead.

Tuning: Drop D (D A D G)

Intro:
G|-----------------------------|-----------------------------|--------------------------------|
D|-----------------------------|-----------------------------|--------------------------------|
A|-----------------------------|-----------------------------|--------------------------------|
D|----0-0-0-0-0--0-0-0-0-0-----|-----0-0-0-0-0--0-0-0-0-0-0--|-----0-0-0-0-0--0-0-0-0-0-0-0-0-|

Riff 1
G|---------------------------------|
D|---------------------------------|
A|---3h5---5h6---6-----3h5---0h1---| 6x
D|-0-----0------0--0-0-----0-----0-|

G|-------------------------------|
D|-------------------------------|
A|---3h5---5h6---6-----3h5---0h1-|
D|-0-----0------0--0-0-----0-----|


[Silence]                              
                              
Riff 2

G|-----------------------------------------------------|
D|-----------------------------------------------------|
A|-----------------------------------------------------| 3x
D|-0--0-00-0h1p0--0-0-/8-8-8\-5--5-55-5h6p5-5-5-5-5-3--|
                       \_3_/                    \_3_/

Riff 2a
G|-------------------------------------|
D|-------------------------------------|
A|-------------------------------------| 4x
D|-/12---0--/12---0--/12---0---2h3-3-3-|

G|-------------------------------|
D|-------------------------------|
A|-------------------------------|
D|-0~~---------------------------|

Riff 3
G|------------------------|
D|------------------------|
A|------------------------| 4x
D|-0--3--7--3--5--3--2--3-|

Riff 3a - with distortion
G|-------------------------------------------------|
D|-------------------------------------------------|
A|-------------------------------------------------| 4x
D|-0-0-0-3-3-3-7-7-7-3-3-3-5-5-5-3-3-3-2-2-2-3-3-3-|
   \_3_/ \_3_/ \_3_/ \_3_/ \_3_/ \_3_/ \_3_/ \_3_/

Riff 2

G|-----------------------------------------------------|
D|-----------------------------------------------------|
A|-----------------------------------------------------| 3x
D|-0--0-00-0h1p0--0-0-/8-8-8\-5--5-55-5h6p5-5-5-5-5-3--|
                       \_3_/                    \_3_/

Riff 4
G|----------------------|----------------------|------------------|
D|----------------------|----------------------|------------------|
A|----------------------|----------------------|------------------|
D|-0-0-0-0-0--0-0-0-0-0-|-0-0-0-0-0--0-0-0-0-0-|-0-0-0-0-0~~------|

     Key

\_3_/ - triplet

Note: This is what I believe to be the correct version of this song. I am unsure of the 12th fret slides in riff 2a, 
however the -2h3-3-3- part I am almost certain of. The bass plays something there, and -2h3-3-3- sounds correct. 
Also, the distortion in 3a is option, although it will help with the build up.
For some reason, all of the \'s are messed up, and show up as two of them. Just ignore that and act as if there is only one.