Nice cover dude =) !
Two things I'd like to point out :
- Around 1:49 there's some noise, you should try to mute the guitar within the pauses ( not manually but with the software you're using)
- The riff around 1:20 , I think you should palm mute this and then play it loud when the drums come in.
Thanks for the crit man!

From what I can tell here, your riffing is pretty damn tight. The solo def could have been better, but more in terms of the expressive tools, slides, bends, vibrato etc. Its pretty clear you can handle the technical side of it. Pretty good man, and kudos for doing both guitars. Gotta love Death.