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