Here is the full list of all 34 Call of the Sea achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
You have completed the Game.
You found the Out of the Blue Key.
You have completed Chapter 6.
You have found all the story logs.
You have collected all the puzzles notes.
You opened a portal to Arcadia.
You have found the secret object in Chapter 6.
You have found all the murals on the island.
You used your blood to open the Sanctuary gates.
You have completed Chapter 5.
You swam through the Big Stream in the Sunken Town.
You experienced all the visions in Chapter 5.
You have found the secret object in Chapter 5.
You have completed Chapter 4.
You crossed the dried ocean and made it to your house.
You have found the secret object in Chapter 4.
Norah didn't write that did she?
You made Norah sing to a microphone with no power. Are you happy now?
You have found 50% of the story logs.
You have completed Chapter 3.
Play an ancient instrument.
You watched the last slide from Harry's projector.
You have played the notes of the music box of Chapter 4 on the piano in Chapter 3.
Now you can sell the scoop to any tabloid newspaper.
You have found the secret object in Chapter 3.
We know it we are the teacher’s pet. BUY ALL RAW FURY GAMES!
You have replayed a level.
You have completed Chapter 2.
You have found 25% of the story logs.
You have found the secret object in Chapter 2.
You have completed Chapter 1.
Where did my motorboat go?
You have found the secret object in Chapter 1.
You have completed the Prologue.