Wall of Mouths

Im working this out at the minute myself, excellent tune, so if it helps - The song is played tuned down half a step, and is basically just picking patterns of the chords - E minor, C, G , then play the low e string on the 2nd fret, before going back to E minor again,
There is A lot of hammer ons within the chord shapes - In the E minor the 5th string is being hammered on, in the C the 4th string on the second fret
It sounds okay just strumming the said chords, but once you get used to the chord shapes, the hammer ons that make the song will make sense if you listen to the Cd , you should get used to it.
The chorus is D and C and then back to G and then just follow the main pattern as before.
And that wee instrumental interlude near the end, is E minor , A minor and D.
Hope this makes sense, i could try to write a tab but it would take months,