It's not as difficult as it looks. Clearly, you don't have to 
play it at this tempo and I left notes on where I think is 
a good time to shift your hand up and down the neck. 

Often the piece has a run of notes that follows a chord 
position well, but is too high on the neck. In those 
cases I decided to keep it away from the low strings. If 
your guitar only has 22 frets like mine, bend the 22nd 
to make the sound of the 23rd fret when necessary.

Once you get good at it, it becomes lots of fun.