Hit a Hole-in-One on Crater Springs - The lay of the land may be helpful. (All difficulties)
This achievement isn't to difficult with a little bit of luck on your side. You will want to hit a hole in one on Crater Springs. Now if you want to just aim at the hole and try to get a bounce shot in, a 7 iron seems to be your best bet. However, an easier method is shown below and is the one I recommend. Use a 5 iron and aim your line of sight on the left side of the blue ball (still on the ball, just on the left side of it) on your left. Hit your ball full power and it should roll right in. You will also want to do this on rookie difficulty to avoid wind. See the video below for a visual guide.