E|-------------------------------------|
B|-------------------------------------|
G|-------------------------------------|
D|-------------------------------------|
A|----------------4----1111111-2-3\4-3-|
E|1111111111111111-------------0-1\2-1-|
 ................*     ......
Riff#1(b).Same as riff 1, except where not.Just letting the two notes ring.4 and 1.
E|-------------------------------------|
B|-------------------------------------|
G|-------------------------------------|
D|-------------------------------------|
A|----------------4----1-------2-3\4-3-|
E|1111111111111111-------------0-1\2-1-|
 ................                   *

Riff#2.  Heavy.
E|------------------------------------------|
B|------------------------------------------|
G|------------------------------------------|
D|------------------------------------------|
A|-------2\4-------2-4----1-1-1-1-1-2-3\4-3-|
E|1-1-1-1---1-1-1-1-1---------------0-1\2-1-|
 . . . .     . . . .       . . . .
Riff#3. Heavy.Slow.
E|---------------------------------------|
B|---------------------------------------|
G|---------------------------------------|
D|5----7-6-8-5--8--7-8--5----7-6-8--4--6-|
A|3----5-4-6-3--6--5-6--3----5-4-6--2--4-|
E|3----5-4-6-3--6--5-6--3----5-4-6--2--4-|
      . . . .     . .       . . .
Transition A. Slow.
E|-------------------|
B|-------------------|
G|-------------------| Repeat Riff #3.
D|-------------------|
A|3------------2---6-|
E|-------------------|
Transition B. up and down picking.
E|------------------------------------|
B|------------------------------------|
G|------------------------------------|
D|------------------------------------|
A|------------------------------------|
|0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-12/3|
 . . . . . . . . . . . . . . . .
Riff#4. Slightly Fast.
E|-------------------------------------------------------|--------------------------------|
B|-------------------------------------------------------|--------------------------------|
G|-------------------------------------------------------|--------------------------------|
D|------------9-----------------------9-109-8-----------4|----------5----------7\8-7\8-7\8|
A|2-----------7-----------2-----------7-8-7-6-----------2|----------3----------5\6-5\6-5\6|
E|0-0-0-0-0-0---0-0-0-0-0-0-0-0-0-0-0---------0-0-0-0-0--| 0-0-0-0-0---0-0-0-0-0-----------|
   . . . . .   . . . . .   . . . . .         . . . . .

Riff#4, continued.
Fill 1.
E|-------------------------------------| |---|
B|-------------------------------------| |---|
G|-------------------------------------| |---|
D|------------5------------------------| |---|Stop.  Drum Roll. Repeat Riff#3.
A|------------3-3-3-3-3-3-3------------| |-2-|
E|3-3-3-3-3-3---------------1-1-1-1-1-1| |-0-|
 . . . . . .   . . . . . . . . . . . .
Riff#5.Fast where bunched notes are of course.
E|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|----------------------------------7---7------------------------------------|
A|4--444444--4--444444--4--444444-55--55--4--444444-4-444444-----6-6-----5-5-|
E|-----------------------------------------------------------44444-4-33333-3-|
 .  ......  .  ......  .  ...... ..  ..  .  ...... . ...... ....    ....

Riff #6.Fast.
E|--------------------------------------------------------| |---|----------------|
B|--------------------------------------------------------| |---|----------------|
G|--------------------------------------------------------| |---|----------------|
D|--------------------------------------------------------| Repeat Riff#5.|---|----------------|
A|7777777777777777888888887777777777777777----------------| |-2-|-----3-3-3-3-3-3|
E|----------------------------------------7777777766666666| |-0-|-----1-1-1-1-1-1|
 ........................................................
Repeat Riff#1 and start at the * where note "4" is.                                  . . . . . .
Repeat Riff#1b, and
the last part of the riff where the 2nd * is in Riff#1 b. Continue with this:

E|--------|
B|--------|
G|--------|
D|--------|
|3-3-3-3-|
|1-1-1-1-|
 . . . .
End Riff.