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