7-string guitar tuned down 1 whole step 
(low to high: A D G C F A D)
This is a fairly easy song with only 2 main riffs
Riff 1
|| ---------------------------------------------------------------
|| ---------------------------------------------------------------
|| ---------------------------------------------------------------
|| ---------------------------------------------------------------
|| --------13--13--12--13-------------10-10--9-10-----------------
|| -2--2--11--11--10--11----2--2----8---8--7--8-------------------
|| -0--0--------------------------0--0----------------------------
Riff 2
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|| -------------------------------------
|| -------------------------------------
|| -------------------------------------
|| --4--3--6--3--4--3--6--4-------------
|| --4--3--6--3--4--3--6--4-------------
|| --2--1--4--1--2--1--4--2-------------