Annihilator - Sound Of Horror Tabs

guitar 1:
E|---------------------------------------|
B|---------------------------------------|
G|---------------------------------------|
D|------------------------13---12---11v--|
A|-----13---12---11v---------------------|
E|-0-0----0----0------0-0----0----0------|

after 2x, guitar 2 tunes in:
E|---------------------------------------|
B|---------------------------------------|
G|---------------------------------------|
D|-2-2-2-2-2-2-2-2--2-2-2-2-2-2-2-2------|
A|-2-2-2-2-2-2-2-2--2-2-2-2-2-2-2-2------|
E|-0-0-0-0-0-0-0-0--0-0-0-0-0-0-0-0------|
PM     x x x x x x      x x x x x x

after 6x, guitar 1 changes riff:
E|----------------------------------|
B|----------------------------------|
G|----------------------------------|
D|-13-(x8)-12-(x8)-11-(x8)-12-(x8)--|
A|----------------------------------|
E|----------------------------------|

then guitar 1 changes back to its first riff, repeats it twice, and then switches back
to the second riff again. guitar 2 changes slightly from rhythm when the solo comes up,
and the PMed chords go up to an F power chord. if you have any comments or corrections,