E|-------------5-----------|
B|-------------------------|
G|-------------------------|
D|-------------------------|
A|-------------------------|
E|-------------------------|



[RIFF 1]
Here is the first riff. Tremolo pick these a string power chords 4 times.

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


Then here is the transition which will complete the riff.

It goes like 7,3,2(*4) and then 3(let ring) 2

e|------------------------------------------------------------------|
                                   (let ring keep trem picking)
B|----7--------------3--2----------3---------------------------2----|
G|----9--------------5--4----------5---------------------------4----|
D|------------------------------------------------------------------|
A|------------------------------------------------------------------|
E|------------------------------------------------------------------|

Play this riff for a couple of times for a few minutes and then there is the next riff.

[Riff 2]

Riff 2 Part 1:

E|----------------------------------------|
B|----7--------------5--7-----------------|
G|----9--------------8--9-----0-----------|
D|----------------------------10----------|
A|----------------------------------------|
E|----------------------------------------|

Riff 2 Part 2:

E|------------------------------------|
B|----5--------------8----5------7----|
G|----8--------------10---8------9----|
D|------------------------------------|
A|------------------------------------|
E|------------------------------------|

Both Part 1 and Part 2 are played one after another to make the whole riff.

And keep playing that for a few times until we have a variation of the riff.
In the variation, we play part 1 simillarly but for part2 we play power chrods on 8 10 5 7 frets.


Riff 2 Var Part 1:
It is the same,

E|----------------------------------------|
B|----7--------------5--7-----------------|
G|----9--------------8--9-----0-----------|
D|----------------------------10----------|
A|----------------------------------------|
E|----------------------------------------|


Riff 2 Var Part 2:

E|---------------------------------------------|
B|----8--------------10----5------7------------|
G|----10-------------12----8------9------------|
D|---------------------------------------------|
A|---------------------------------------------|
E|---------------------------------------------|