You can tune down 1/2 step, it might sound better.
Main riff 14x
E:-5-5------------------- 5-5--------------
A:-----5-4-3-3----------- ------5-4-3-3-5--
D:-----------------7-7-7- -----------------
G:----------------------- -----------------
Heavy Part =
E:-5-3----------------------------5-3--------------------
A:----3---0--------------------7-------3--0----------753-
D-------2----7-7-7-7-7-7-5-----------2--------75---------
G:---------------------------------------------975-------
(cont.)
E:-5-3------------------------------5-3----------------------------
A:------3----0----------------7-5-------3---0--------------------7-
D:---------2----7-7-7-7-7-5-------------2----7-7-7-7-7-7-5---------
G:-----------------------------------------------------------------
Go back to main riff, play 14x again
play Heavy Part
(After going through Heavy Part)
E:-----------------------------
A:--0 (4x pick up speed)------2 =
D:-----------------------------
G: ----------------------------
Then go (3x)
E:-------------------------------------------
A:--2----------2------2-----------4----------
D:----4----------4------------------6--------
G:------4----------2-------4----------6-6666666666666 =