same in Guitar Hero II

main riff C sharp minor 9ths
but the harmony doesnt seem right at all

pretty sure its this folks

-------------------------------------------------------------
-------------------------------------------------------------
----------11-----------8-----------8------------8-/-9---
---9--9-----------6-----------7------------6-------------
---7----------4-----------6-----------4-------------------
-------------------------------------------------------------

im not a student of music, just hobby, but this is how it was described.

"the actual harmony is indeed C#m11, Amaj9(#11), B7, F#m13. This harmony results from the complementary parts of the 1st and 2nd guitar arpeggi. The 1st guitar is prominent on the mix, let's say, intensity forte, and the 2nd guitar is a little back in the mix, something of intensity mezzoforte."

oops forgot this part
"And the 2nd guitar harmony is spelled: Esus2, C#sus2, D#dim, Csus2."

I usually add a little more fills to the bass line during the chorus but overall the tab is great