This is a pretty easy piano piece adapted for guitar.
Just play the riff below over and over.

e:----1-0-1---1-0-1---1-0-1---1-0-1--
b:--3-------3-------1-------1--------
g:-----------------------------------
d:-----------------------------------
a:-----------------------------------
e:-----------------------------------

this does get pertty boring so u could add is some pull offs and hammer ons for effect.