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