This part isn't that hard. All it is is just a few fast hit-ons, pull-offs, and bends.

Tuning-Dropped-D or DADGBE

E-----------------------------------------|
B-----------------------------------------|
G-----------------------------------------|
D-----------------------------------------|
A-----------------------------------------|
D-0h14h15-0h14p12-0h10h12-0h14p12-0h10h12-|

E------------------------------------------|
B------------------------------------------|
G------------------------------------------|
D------------------------------------------|
A------------------------------------------|
D-0h14h15-0h14p12-0h10h12-0-15-17-17b-15---|
           r-------------------------------|*
Right here | another guitar comes in playing the same riff on the higher D string and 
to play what the other guitar does but on the higher string.

E-----------------------------------------|
B-----------------------------------------|
G-----------------------------------------|
D-----------------------------------------|
A-----------------------------------------|
D-0h10h12-0h10h12-0h10h12-0h10h12-0h10h12-|

____________________                  ___________
|1st and 3rd endings                  |2nd ending
E------------------------------------|---------------------------------------|
B------------------------------------|---------------------------------------|
G-----------------------------------.|---------------------------------------|
D-----------------------------------.|---------------------------------------|
A------------------------------------|---------------------------------------|
D-0h10h12-0h10h12-0h10h12-0-3-5-5b-3-|0h10h12-0h10h12-0h10h12-0-15-17-17b-15-|

Remember this whole last section is also played on the other D string by another guitar. Enjoy