Standard Tuning (eBGDAE)
Chord Key
  G F# Bm
e 3 2  7
B 3 2  7
G 4 3  7
D 5 4  9
A 5 4  9
E 3 2  7
Key
h= hammer on
p= pull off
Scratch the strings with your pick at the start.
Main Riff
e|-----------------------------------------------
B|--------------------7-7h8p7--------------------
G|----6---6-7-8-6-7-9---------9-7-6--------------
D|8-9---9----------------------------------------
A|-----------------------------------------------
E|-----------------------------------------------

e|-----------------------------------------------------------------
B|--------------------7-7h8p7----7----7-----------7-9-7-9b-7-------
G|--6-7---6-7-9-6-7-9---------10---10---7-------7------------7-6-7-
D|9-----9---------------------------------7---7--------------------
A|------------------------------------------9----------------------
E|-----------------------------------------------------------------

e|-----------------------------------------------
B|--------------------7-7h8p7--------------------
G|----6---6-7-8-6-7-9---------9-7-6--------------
D|8-9---9---------------------------9------------
A|-----------------------------------------------
E|-----------------------------------------------
Pre-Chorus
e|-----------------------------------------------
B|-----------------------------------------------
G|11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11
D|11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11
A|9--9--9--9--9--9--9--9--9--9--9--9--9--9--9--9-
E|-----------------------------------------------

Chorus
e|3-3-3-3-3-3-3-|3-3-3-3-3-3-3-3-3-|7-7-7-7-7-7-7-7-|2-2-2-2-2-2-2-2|
B|3-3-3-3-3-3-3-|3-3-3-3-3-3-3-3-3-|7-7-7-7-7-7-7-7-|2-2-2-2-2-2-2-2|
G|4-4-4-4-4-4-4-|4-4-4-4-4-4-4-4-4-|7-7-7-7-7-7-7-7-|3-3-3-3-3-3-3-3|
D|5-5-5-5-5-5-5-|5-5-5-5-5-5-5-5-5-|9-9-9-9-9-9-9-9-|4-4-4-4-4-4-4-4|
A|5-5-5-5-5-5-5-|5-5-5-5-5-5-5-5-5-|9-9-9-9-9-9-9-9-|4-4-4-4-4-4-4-4|
E|3-3-3-3-3-3-3-|3-3-3-3-3-3-3-3-3-|7-7-7-7-7-7-7-7-|2-2-2-2-2-2-2-2|
 |1 & 2 & 3 & 4 |& 1 & 2 & 3 & 4 & |1 & 2 & 3 & 4 & |1 & 2 & 3 & 4 &|
Do this four times.
There is also an alternative version of the chorus using power chords instead of barre chords. Use which ever one you feel the most comfortable with. (Only use down strokes for this version):
e|---------------------------------------------------------------
B|---------------------------------------------------------------
G|---------------------------------------------------------------
D|5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-9-9-9-9-9-9-9-9-4-4-4-4-4-4-4-4
A|5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-9-9-9-9-9-9-9-9-4-4-4-4-4-4-4-4
E|3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-7-7-7-7-7-7-7-7-2-2-2-2-2-2-2-2
  1 & 2 & 3 & 4 & 1 & 2 & 3 & 4 & 1 & 2 & 3 & 4 & 1 & 2 & 3 & 4 &

Verse
There is no guitar in the verse, only bass.

Order:
Main Riff
Verse
Pre-Chorus
Chorus
Main Riff
Verse
Pre-Chorus
Chorus
Main Riff