Here is the full list of all 49 HARVESTELLA achievements.
Overcome the last trial of the Karenoid
Rear max livestock and max bond with all
Unlock all jobs
Catch 20 fish in a day
Exchange vows with a partner
Complete all quests
Reach maximum closeness with everyone
Find all caves by digging
Expand the farm to its max size
Complete Chapter 10
Earn over 1,000,000 Grilla from shipping
Complete Chapter 9
Complete Chapter 8
Complete Chapter 6
Complete Chapter 7
Clear 10 floors of the Karenoid
Catch 10 kinds of fish
Complete Chapter 5
Harvest crops a total of 1,000 times
Complete Chapter 4
Level up your pet to its maximum level
Defeat your first FEAR
Complete Chapter 3
Collect 10 Conellu Dolls
Cook 5 kinds of meal
Expand the farm to level 3
Feed your pet for the first time
Improve closeness 5 times
Fortify your weapons a total of 5 times
Complete 5 quests
Rear your first livestock
Catch your first fish
Catch a size 10 Quotidicrab
Craft 5 kinds of item
Complete Chapter 2
Complete Chapter 1
Harvest your first crops
Harvest crops a total of 10,000 times
Craft every kind of item
Cook every kind of meal
Catch every kind of fish
Collect all Conellu Dolls
Fortify all weapons to max strength
Defeat every kind of FEAR
Cook HQ Pure Medicinal Porridge
Harvest a high-quality Islet Watermelon
Destroy all walls with bombs
Eat Dangerous Nitro Sautee at break time
Max out all 4 Break Gauges