this is just the main part of the intro. i haven't figured out the rest.
/=slide
.=palm mute
[ Tab from: http://www.guitaretab.com/a/as-i-lay-dying/110892.html ]
first guitar
D-------------------------------------------------------|
A-------------------------------------------------------|
G----------5-7-7/8--------5-7-7/8-7-5-------------------|repeat
D-----0-------------0-----------------8----------------|
G------------------------------------------------------|
C------------------------------------------------------|
second guitar
D-------------------------------------------------------|
A-----------5-7-7/8-------5-7-7/8-7-5-------------------|
G-----0-------------0-----------------8-----------------|repeat
D-------------------------------------------------------|
G-------------------------------------------------------|
C-------------------------------------------------------|
