This is an awesome song and I'm almost positive that this is the correct way to play it.

Standard Tuning

Intro/Verse:

Guitar 1
e----------------------------
B-3--3-3/5--5-5/6--6--1-1----
G-3--3-3/5--5-5/7--7--2-2----
D-x--x-x-x--x-x-x--x--x-x----
A-1--1-1/3--3-3/5--5-(0)-----
E----------------------------

Play this through twice for intro and repeat four times for the verse.

Guitar 2
Bb5 C5 D5 A5  Play with the same rhythm as Guitar 1 throughout the verse
then play the chorus chords with Guitar 1


Chorus: play 4x
 
 C  F Dm Bb
e-3--1--5--6---
B-5--1--3--6---
G-5--2--4--7---
D-5--3--4--8---
A-3--3--5--8---
E----1-----6---

C           F
  Sha la la la

Dm          Bb
  Sha la la la la la la


Verse 2
Chorus

Interlude:
riff 1
e----------------------------------------------
B----------------------------------------------
G-----7---------9-----------10---------5-------
D-------8---------10-----------12--------7-----   Play this I think 8x
A---8--------10----------12----------7---------
E-6--------8----------10-----------5-----------

Add this riff on guitar 2 after I think 2x of riff 1
riff 2
e----------------------------------------------
B-----4--------6--------10-----8-6-5-3---------
G-4/5---5--5/7---7--7/9----10------------------
D----------------------------------------------   Play 
A----------------------------------------------
E----------------------------------------------


Complete chorus twice