I don't know this whole song, but it's built around these two riffs.

Riff 1
g
d
a                              3
d  0  3  5  6 5 0 1 0       0  3  5  6 5 0 1

Riff 2
g
d
a                                                      3
d  0   3   0   3   0 1 0   3   0   3   0 1 1
 
Transcribed by Jeremiah Jones