This can be a tricky one. It means, you need to beat at least one challenge in 4 of the gamernet channels.
e.g: If you successfully beat
1 long drive challenge,
1 9 hole challenge,
1 18 hole challenge,
1 free style challenge, you will get the achievement.
The other channel you can choose to use is the Buick channel. So you have to 4 out of a possible 5.
Pick one just above 100 points....easy!!!!