The bass doesn't have a lot of work in this song but here it is anyway...

Riff 1

G:---------------------------
D:---------------------------
A:-0-0-0-00---0-0------------
E:---------------------------


Riff 2

G:--------------------------------------------------------
D:--------------------------------------------------------
A:--------------------------------------------------------
E:--5-5-5-4-5-5---4-4-4-3-4-4---2-2-2-1-2-2--1-1-1-1-0--0-


Listen to the song to know when to play each of this riffs.