Here is the full list of all 17 Grippy Golf achievements.
Complete World 1
Complete World 2
Complete World 3
Complete World 4
Complete World 5
Complete World 6
Complete World 7
Collect 20 Stars
Collect 50 Stars
Collect 100 Stars
Collect All Stars
Gather 20 large traffic cones.
Complete a level faster than the developer.
Beat the developer's time on every level.
Purchase every item from the star store.
Run out of ammo, then get a hole in one.
Gather over 10,000 kg.