Drop D Tuning, Creator of Tab: Derek, Creator of song: Frank Klepacki

Guitar Riff 1:

E:-------------------------------------------------------------------------------
B:-------------------------------------------------------------------------------
G:-------------------------------------------------------------------------------
D:--------------------3---------------------3---------------------3--------------
A:0--0--3-------3-5-5---0--0--3-------3-5-5---0--0--3-------3-5-5---0--0--3-6--5-
D:0--0--3---0-0---------0--0--3---0-0---------0--0--3---0-0---------0--0--3-6--5-
            x x     x             x x   x               x x   x

Repeat Twice.

Guitar Riff 2:

E:-------------------------------------------------------------
B:-------------------------------------------------------------
G:-------------------------------------------------------------
D:-------------------------------------------------------------
A:0-0-0-0-0-0-----0-0-0-0-0-0-----0-0-0-0-0-0-----0-0-0-0-6--5-
D:0-0-0-0-0-0-----0-0-0-0-0-0-----0-0-0-0-0-0-----0-0-0-0-6--5-

Palm mute all but the 6 and 5.
Repeat twice.

Not sure how that bass riff in the middle goes nor the other instruments.

Guitar Riff 3: (After the "Your feeling of helplessness is your best friend, savage" part.)

E:-----------------------------
B:-----------------------------
G:-----------------------------
D:-----------------------------
A:3-3-4-5\0-0-0-0--0-0--0-0--0-
D:----------0-0-0--0-0--0-0--0-
            x x    x    x    x

First two of the 0s are palm muted and the third is not. Then the rest of them go in a pattern of 1 palm muted
and the next left open. Do this until it ends, then repeat the riff.

The next part is basically the same riff but slowed down, then it goes back to the previous riff.
I'm sure you can figure that part out yourselves.