Biohazard - H.F.F.K Tabs

B.t.w. this tab is in Standard Tuning but I don´t know if it must be played in Standard or Drop D but it sounds right to me.
Have fun with playing it!!

Biohazard – H.F.F.K.


Riff A
E---------------------------------|
B---------------------------------|
G---------------------------------|
D--7---6---2---1---7---6---2---1--|     Play it 4 times
A--7---6---2---1---7---6---2---1--|
E--5---4---0---0---5---4---0---0--|

Riff B
E----------------------------------------|
B----------------------------------------|
G--5--4--3--8--5------------------7/6----|
D--5--4--3--8--5--5--2------------7/6----|    Play it 2 times
A--3--2--1--6--3--5--2------------5/4----|
E-----------------3--0-------------------|

Riff C
E----------------------------------------|
B----------------------------------------|
G--5--4--3--8--5-------------------------|
D--5--4--3--8--5--5----------------------|
A--3--2--1--6--3--5----------------------|
E-----------------3----------------------|

Then play:

Riff A 2x
Riff B 2x
Riff C 1x
Riff A 6x

Riff D  (I don´t know if the hammer-ons and pull-offs are correct)
E-------------------------------------|
B-------------------------------------|
G-------------------------------------|
D-------------------------------------|   Play this 8 times
A--8/5--5--5----8/5--5----------------|
E--6/3--3--3----6/3--3---5h6p5--6h7---|

Riff E (this part is played during the solo) Play this 2 times
E---------------------------------------|---------------------------------------|
B-------------------------------------------------------------------------------|
G-------------------------------------------------------------------------------|
D---------------------------------------|---------------------------------------|
A--7/4--4--4---7/4--4-----7/4--4---/10--|--7/4--4---4--7/4--4------7/4--4---/8--|
E--5/2--2--2---5/2--2-----5/2--2---/-8--|--5/2--2---2--5/2--2------5/2--2---/6--|
                     P.M.		                       P.M.
Then play Riff D 4 times

Riff F
E-------------------------------|
B-------------------------------|
G-------------------------------|
D--7---5---7---8---5---6---9----|
A--7---5---7---8---5---6---9----|
E--5---3---5---6---3---4---7----|

Then play:

Riff B 2x
Riff C 1x
Riff A 8x