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