This song is in drop-D tuning.

Intro: without heavy distortion

G------------------------|
D------------------------|
A---------3--------5-----|
D-0-0-3/5----0-3/5-------| ...x4

     : with heavy distortion

G------------------------|
D------------------------|
A---------3--------5-----|
D-0-0-3/5----0-3/5-------| ...x8 (guitar starts)

Verse 1: without heavy distortion

G------------------------|
D------------------------|
A---------3--------5-----|
D-0-0-3/5----0-3/5-------| ...x12

Chorus:

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-0-0-5/3-0-2-3-0-0-5/3-0-2-3-0-0-5/3-0-2-3-1-1-1-1-6-6-6-6-

Verse 2: without heavy distortion

G------------------------|
D------------------------|
A---------3--------5-----|
D-0-0-3/5----0-3/5-------| ...x12

Chorus:

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-0-0-5/3-0-2-3-0-0-5/3-0-2-3-0-0-5/3-0-2-3-1-1-1-1-6-6-6-6-

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-0-0-5/3-0-2-3-0-0-5/3-0-2-3-0-0-5/3-0-2-3-1-1-1-1-6-6-6-6-5-

-Pause for four bars, i.e: four times what it takes to play the main riff (intro. riff)-

Verse 3: without heavy distortion

G------------------------|
D------------------------|
A---------3--------5-----|
D-0-0-3/5----0-3/5-------| ...x12

Chorus:

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-0-0-5/3-0-2-3-0-0-5/3-0-2-3-0-0-5/3-0-2-3-1-1-1-1-6-6-6-6-

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-0-0-5/3-0-2-3-0-0-5/3-0-2-3-0-0-5/3-0-2-3-1-1-1-1-6-6-6-6-

G-----------------------------------------------------------
D-----------------------------------------------------------
A-----------------------------------------------------------
D-1-1-1-1-6-6-6-6-1-1-1-1-6-6-6-6-5(hold, let ring)---------

-Pause for two bars-

Outro: 

G------------------------|
D------------------------|
A----------------3-------|
D-0-0-5-3--0-3-5----5----| ...x3

G------------------------|
D------------------------|
A----------------2h3h2---|
D-0-0-5-3--0-3-5-------5-| ...x1

-After five runs of the outro riff the pace quickens but playing remains the same until 
the end of the song-