Here is the full list of all 34 EARTHLOCK achievements.
Filled the library with mementos
Defeated one of every enemy
Released all the Golden Bibis
Crafted one of every weapon
Equipped a Talent in every available slot
Crafted one of every Perk Talent
Unlocked all prison cells in Karba Prison
Dug up all treasure zones
Levelled every type of plant to level 3
Grew a plant in every garden slot
Defeated the Hollow Knight
Cured Benjo and rescued Bran
Levelled all characters to level 20
Planted one of every critter plant
Scavenged all scrap piles
Completed the game
Arrived at the Memory Chamber
Received the Lys Aegis Talent from Lady Lumia
Levelled up all Bonds to level 5
Released all the barnacles to play on Plumpet Beach
Got all the paintings for Plumpet Library
Released 50 tormented Ghosts
Harvested 10 000 fruits
Gained Gold Rank in all Tournaments
Liberated the Great Wave
Assembled PAT
Opened 50 chests
Olia rejoined the party
Defeated the Mushriga
Rescued Taika from the goblin
Helped Ive after she crashed the plane
Arrived at Plumpet Island
Gnart joined the party
Defeated the Temple Guardian