Here is the full list of all 37 Winning Putt: Golf Online achievements.
Succeed in one putting 30 times
Score a Hole-in-one
Score an Eagle
Score a Birdie
Score 30 Bogeys
Land on the Fairway from the tee 100 times
Perform 10 Chip in Shots
Perform 10 Chip-in birdies
Perform 5 Chip-ins from the Bunker
Perform 5 Chip-ins from the rough
Win 10 Betting Rounds
Scored 3 stars on all academy tests
Hit golf balls for a total distance of 52,626,768 yards
Complete a Challenge Round
Win a Challenge Round
Win 10 Challenge Rounds
Lose 10 Challenge Rounds
Compete in a Betting Round
Participate in a tournament
Reached Level 5 in Winning Putt
Reach Level 10 in Winning Putt, and pass Junior Pro Qualifier Test
Reach Level 15 in Winning Putt and pass Semi Pro qualifier Test
Reach Level 20 in Winning Putt
Reach Level 25 in Winning Putt
Reach Level 30 in Winning Putt
Pass the Tour Pro Qualifying Test
Pass the Master Pro Qualifying Test
Pass the National Champion qualifying teast
Pass the World Chamion qualifying Test
Unlock Memorial's very hard difficulty.
Unlock Breezy Hill's very hard difficulty.
Unlock Helena's very hard difficulty.
Unlock Plumeria's very hard difficulty.
Unlock Wildstone's very hard difficulty.
Unlock Seven Angels' very hard difficulty.
Unlock Edelweiss' very hard difficulty.
Unlock Starglen's very hard difficulty.