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