For this achievement, all you need to do is shoot a score under par using "True-Aim." To do this, just follow these steps:
--From the Main Menu, go to "My Tiger' 11" and scroll down to "Options." Then scroll down to "Game Options" and make sure "True-Aim" is turned "On."
--Now choose "Play Now" and pick either your "Created Golfer"(if you have your attributes up in the 70's or higher) or you can pick a "Licensed Golfer."
--For the course, choose to "Create A Course" and then select St. Andrews as the course. Then select "Hole 9" for all 18 holes, which is the shortest Par 4(261 yards). So you can basically hit the green everytime from the tee box.
--Also, to make things easier on you, try adjusting the other settings to match these:
-Tee Select: White
-Green Speed: Average
-Green Hardness: Medium
Achievement Unlocks as soon as you finish the round(only if you finish the round under par!)