Here is the full list of all 35 STORY OF SEASONS: Friends of Mineral Town achievements.
Cook every kind of dish.
Own 5 pets.
Eat at least one of every type of dish you can make.
Catch every type of fish.
Ship every type of crop.
Ship every type of crop with ★5 quality.
Make 300 offerings to the Harvest Goddess. (1x per day)
Cook 50 different kinds of dishes.
Stay in the Hot Spring for 10 hours straight.
Reach Spring of Year 5.
Win the Fluffy Festival.
Catch 50 different types of fish.
Win the Moo-Moo Festival.
Get married.
Successfully confess to every romance option before marriage.
Have a total of 5,000,000G at once.
Catch 10 different types of fish.
Reach Spring of Year 3.
Breed at least one of every livestock type.
Reach BF255 in a mine.
Reach BF30 in a mine.
Reach BF100 in a mine.
Cook 10 different kinds of dishes.
Win the Cluck-Cluck Clash.
Renovate every building on your farm.
Renovate your house twice.
Own at least 4 Angora rabbits.
Own at least one of every livestock type.
Own at least 8 alpacas.
Own at least 8 sheep.
Own at least 8 cows.
Have a total of 100,000G at once.
Have a total of 50,000G at once.
Own at least 4 chickens.
Reach Spring of Year 2.