Guitar1 plays this riff through the whole song(10 times)
E|-------------------------------------------------------------------|
B|-------------------------------------------------------------------|
G|-------------------------------------------------------------------|
D|----6-5-----3------6-----------------------------------------------|
A|-8-------6----4------3h4--6----------------------------------------|
E|-----------------4-------------------------------------------------|


Guitar2 comes in the third time and plays 4 times. 
Play variation 1 and 2 every other time... 

Variation1(1 and 3 time)
E|--------------------11---------------------------------------------|
B|-----9-8-----6-8-9-----9--8h9--8-----------------------------------|
G|-10-------8--------------------------------------------------------|
D|-------------------------------------------------------------------|
A|-------------------------------------------------------------------|
E|-------------------------------------------------------------------|

Variation2(2 and 4 time)
E|--------------------11---------------------------------------------|
B|-----9-8-----6-8-9-----9--8h9--11----------------------------------|
G|-10-------8--------------------------------------------------------|
D|-------------------------------------------------------------------|
A|-------------------------------------------------------------------|
E|-------------------------------------------------------------------|

...and end with the note showed below after playing the riff above.

E|----------|
B|----------|
G|-10-------|
D|----------|
A|----------|
E|----------|
Let the note ring out as long as your guitars sustain allows you, while
guitar 1 continiue playing his riff for a few more rounds...