Here is the full list of all 13 Barnacle achievements.
The base game contains 0 achievements, and there is 1 DLC pack containing 13 achievements.
Fell asleep for the first time.
Woke up for the first time.
Found your first map fragment.
Collected all map fragments.
Picked up your first item.
Filled every inventory slot.
Read your first note.
Read all notes.
Break the game.
Found the hub.
Found a secret place.
Reached out for the first time.
Cleared a hard round of Barnacle Sweeper.