Nile – Barra Edinazzu tab

Karl Sanders uses rather vintage equipment, kinda surprising considering 
the death metal style. Anyway, Nile tunes to Drop-A tuning, seems strange 
on 6-string guitars, but that's what they do, I've e-mailed Karl to find 
out their tuning. This riff is the middle part of Barra Edinazzu, it's the 
only riff I have because my pitch is not very good so I can't figure out 
stuff very well. However, when I saw them live, I watched Karl closely, 
and this is how he played the middle riff.

then the riff changes to tremolo picking as follows.
I know it's only two riffs, but I thought I should post 'em anyways.
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