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