You must have your Society at Level 5 to access Hard and 10 courses.
Create a new season
Search and add course "250+ easy achievement" created by Kinkyboots569
Use standard clubs
Select 1 Round
One drive should get you a hole in one which will place you -3 under and 1st place for the achievement.
**If you are looking unlock several other achievements, after adding this course add another called, "Nine Holes in One." Rotate the two courses until you have 10 for the season. This will net you the 10 courses on hard achievement and close to the +10 handicap achievement depending on your starting handicap."