This is a work in progress. So far I have figured out the part that starts at 3:19 and 
lasts through the song for two guitars.

/ = slide

Guitar one
E|0-0-0-0-0-----------------|
B|---------3---1-1-1-1-1----|
G|----------------------2---|
D|--------------------------|
A|-----------0------------0-|
E|----------0------------0--|

Guitar two enters after guitar one has played the above 12 times

E|----------------5-5-5-5-5-----------------5-5-5-5-5/7-7/8-8/7-|
B|-------------------------3------------------------------------|
G|2-2/4-4/5-5/9-9-----------2-2/4-4/5-5/9-9---------------------|
D|--------------------------------------------------------------|
A|--------------------------------------------------------------|
E|--------------------------------------------------------------|

7/10-10/8-8/7-7/5-8-8/7-7/10-10/8-8/7-7/5--|
-------------------------------------------|
-------------------------------------------|
-------------------------------------------|
-------------------------------------------|
-------------------------------------------|


After playing this part 4 times, guitar one disappears, and guitar two changes slightly.

Where it was            It now becomes:
E|---------------5-5-|        E|--------------5-5--|..
B|-------------------|        B|-------------------|
G|2-2/4-4/5-5/9-9----|        G|2-2/4-4/5-5/9------|
D|-------------------|        D|-------------------|
A|-------------------|        A|-------------------|
E|-------------------|        E|-------------------|