Watch the Country Rock: Rhythm 2 online guitar lesson by Joe Dalton from Big Twang
The second chorus adds single note scale runs while keeping the same drive. The third chorus adds double stops with hammer-ons. Sometimes it sounds like there's more than one guitar playing. This is a busy sounding part. It covers a lot of ground.
As always, work on these things slowly at first. The speed will come naturally over time. And only a few dozen reps and it will be up to speed.