Here is the full list of all 16 Lake Ridden achievements.
Completed the game.
Solved the second puzzle out on the island and found the ring.
Solved the puzzle on the island and found the tube.
Unlocked the puzzle box on the island.
Repaired the canon and found the glowing thing.
Unlocked the puzzle box in the basement.
Unlocked the puzzle box in the estate.
Unlocked the puzzle box in the laundry.
Unlocked the puzzle box in the school.
Got out from the root cellar safely.
Unlocked the puzzle box in the courtyard.
Found the glowing thing in the attic.
Unlocked the puzzle box in the attic.
Unlocked the puzzle box in the upper garden.
Found the way out from the lower garden.
Unlocked the puzzle box in the lower garden.