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