Lyric discussion by fear 

Cover art for Sidewinder lyrics by Avenged Sevenfold

I agree, the acoustic stuff throughtout is awesome. It really puts me in mind of a lot of films which have spanish-classical influences (think Antonio Banderas in Once Upon A Time In Mexico). I think possibly this song is written from the point of view of a character like that, a "bearer of fate"- someone who has the power to take life. A parallel I did, notice, though I doubt it was intentional, is the name- 'Sidewinder' was the codename for Michael Madsen's character in Kill Bill, and he's also a Desperado-sort-of-chap. Thats what makes me think maybe it's about that sort of person, metaphorical-ised (I dont think thats a word but hope you understand) as a snake,hence the murderous lyrics. Among the best songs on the album.