Ok, this song isn't that hard, it's intermediate, what the guitarist does here is he
distortion on and off.
Intro (distortion on)
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-x-x-x-xx---3/14/17------------------------------|
-x-x-x-xx---3/14/17------------------------------|
-x-x-x-xx---1/12/15------------------------------|
Main Riff (distortion on and off depending when he's playing it)
[ Tab from: https://www.guitartabs.cc/tabs/o/olympia/insomniac_tab.html ]
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-------9--11--9--7-7-5-3-----9--11--9--7-7-9-7---|
----7---------------------7----------------------|
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Outro (without distortion)
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------9--7-9-------------------------------------|
---7----------9----------------------------------|
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From here he turns the distortion on then goes onto 120 Hours
That's it, kinda confusing, you have to hear it to get it better