Probably guitar badly intonated. My low e string is missing because I need a part for the bridge. I quite like my approach sounds quite nice. I haven't played electric guitar probably over a year but I have played acoustically. So excuse my sloppiness.
I can only do the easiest part of the bat country solo however its the tastiest! Maybe I should Have used more vibrato and had rhythm guitar over it. Most of the complaints on my youtube channel were that i didn't finish it XD hahaha. This part of the solo mad me fall in love with avenged sevenfold