Here is the full list of all 20 Platform Golf achievements.
Watch the credits
Collect 8 Coins in 1 Level
Reach level 10.
Collect 2 gems in 1 Level
Hit the top of any level
Fall into the water
Finish a level with 0 hits left
Finish any Level with one shot
Finish any level in under 12 seconds
Finish a level with 8 hits left.
Hit a Tree 5 Times in one Level
Hit any mushroom 5 times in one level
Get to Level 21
Reach Level 30
Reach level 42
Clear all levels in the forest
Collect 100 Coins in one Play session
Collect 20 gems in one play session
Get a highscore over 2500
Get every Achievement.