You all remember this from Guitar Hero II, it was great then and Harmonix has gotten much better at charting since then.
The Guitar Part is challenging but not frustrating, with a bunch of different riffs and patterns including chords, complicated strumming patterns, some hammer on and pull offs, as well as a bitchin' solo at the end. Well, the solo is good but not great, but it adds to the balance.
What makes this song so fun is the sense of personal growth it gives you. Those complicated chords and strum patterns that are shifting throughout the song will trip up even the most well learned of guitar players the first time, but by the end you'll likely be nailing them and that feels very, very good.
There's a reason this was a pick for a Guitar-Centric game. Frankly, with songs on two separate Rock Band Disc games as well as a whole album for DLC, I'm amazed it took them this long to get this song.
The wait was well worth it.
5/5 without any hesitation.