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