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