This song is all power chords with different rythms and mutes.
It's a simple up and down strum.
Thw secoond rythm has the same chords just every other one is muted.

e|---3333------5555--------|
a|---5555-5555-7777-3333---|
d|---5555-7777-7777-5555---|
g|--------7777------5555---|
b|-------------------------|
e|-------------------------|


second rythm

e|---3333------5555--------|
a|---5555-xxxx-7777-xxxx---|
d|---5555-xxxx-7777-xxxx---|
g|--------xxxx------xxxx---|
b|-------------------------|
e|-------------------------|

Very easy!