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