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