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