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