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