So, after tirelessly searching the internet,
I've found that no one has tabbed this song.
After trying to figure it out, I see why:
It has many intricate and elusive guitar parts.
After sitting down with the guitar and playing it over,
I've found the chord progression as well as the guitar intro:

The intro starts with this guitar riff:

|----(b9)----7--------(b9)----7---------|
|------(b9)------(b9)-----(b9)------(b9)----|
|--8-----8----8---8-----8----8------|
|-----------------------------------|
|-----------------------------------|
|-----------------------------------|

Which repeats 10 times over the chord progression

The chord progression is a ten bar phrase that goes:

Abm     B     E     C#m     Eb


Now, the melodic line that happens when the lyrics come in I have not been able to 
accurately define, so I can't put that on here.

The slower part with the piano bit still follows the same chord progression, so listen 
carefully to get the timing.

Then when the full instrumentation comes back in, the chord progression is also a ten 
bar phrase, so it goes:


Abm     F#     *Eb     F#     E     
E     C#m     C#m     Eb     Eb


*Note: This Eb major chord sounds better if you have it open by tuning down a half-step, 
but this tab is in standard tuning.


The high guitar harmony is simply:

|---11---11---11---11---11---11---11---11---|
|-------------------------------------------|
|-8----8----8----8----8----8----8----8------|
|-------------------------------------------|
|-------------------------------------------|
|-------------------------------------------|

Which repeats over the Abm, Gb, and Eb chords

and:

|---12---12---12---12---12---12---12---12---|
|-------------------------------------------|
|-(b9)---(b9)---(b9)---(b9)---(b9)---(b9)---(b9)---(b9)-----|
|-------------------------------------------|
|-------------------------------------------|
|-------------------------------------------|

Which repeats over the E and Dbm chords