A Cruel Existence - Enraptured Chords & Tabs

This I have heard is in standard, however I played it in C by ear.
C-F-A#-D#-G-C
[ Tab from: https://www.guitartabs.cc/tabs/a/a_cruel_existence/enraptured_tab.html ]
Play in 2's or 4's
C [-------------------------------]
G [Palm-Mute----------------------]
D#[__________----------___________]
A#[---|--|---|5-3|-5-3|---|-------]
F [---|-3|5-6|---|----|6-5|-------]
C [3-5|6-|---|---|----|---|6-5|6-3]

I think this is fairly accuratte, this is the main riff, just repeat