Here is the full list of all 32 Fantasy Farming: Orange Season achievements.
Reach Summer
Reach Fall
Reach Winter
Sell 150 items
Sell 500 items
Sell 1,000 items
Earn 1,000 coins
Earn 5,000 coins
Earn 10,000 coins
Earn 100,000 coins
Catch 15 different fish
Catch all fish
Harvest your first crop
Harvest 1,000 crops
Meet everyone
Reach 100% friendship with someone
Finish the main story
Buy a machine