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