Guitar Hero World Tour
50 Achievements
1000
Xbox 360
A Pair Beats A Pair
You completed an Xbox LIVE 2 v 2 Pro Face-Off match
5
How to unlock the A Pair Beats A Pair achievement in Guitar Hero World Tour - Definitive Guide
Apple
From the Xbox Live menu change your mode to 2v2 Pro Face-Off then start Matchmaking. You can either search with two guitars in your lobby or search for another. This online match needs to be completed, but does not need to be won.
It is possible to bring a guest account into your Xbox Live menu if you have two guitars. Just make sure one of your guitars is selected to Guitar and the other is on Bass before you search (you can switch by pressing the Orange button).