ok, so the whole song is this pattern, ive listened to it several times with epic bass boost.

G|---------------------------------------|
D|---------------------------------------|
A|--3-3-3-3------7------5-5-5-5-----7----|
E|---------------------------------------|X alot

seriously...the whole song is this :D
the bridge there's no bass until around 3:03
following the keyboard is your best bet for the timing and stuff :D
have a blessed day!