Guitar Hero III
59 Achievements
1,000
Xbox 360
Guitar Wizard
Complete all Co-op as the lead guitarist
10
How to unlock the Guitar Wizard achievement in Guitar Hero III - Definitive Guide
You will have to play and beat all the co-op setlist songs as well as the 14 extra songs as the lead guitarist to obtain this achievement. Just play through on co-op and make sure you are always the same controller and the player.