Originally Posted by GamesB2
Even the 'self explanatory' achievements you need to elaborate on.
You need to be crystal clear as to how you unlock them.
You should specify that the Competitive Spirit achievement has to be with someone on your friends list.
If someone cannot figure out you have to beat a friend to unlock the Achievement, then they are a complete idiot. If you didn't have to beat a friend it would simply say in the description "Win an Xbox Live Race"...however. I added in the guide "beat a friend from your friends list".