Full list of all 29 Nightmares from the Deep 2: The Sirens Call achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Complete the game.
Find all morphing parrots.
Got to the contents of Davy Jones' chest.
Gather twelve golden fish tokens.
Find 4 Hidden Objects within 4 seconds.
Got to the top of the lighthouse and saw what's underneath.
Find all secret seahorses.
Find all hidden octopi.
Finished 10 Hidden Object Puzzles in a row without any hints.
Enabled your ally to return to work.
Prepare a spiked coffee.
Finished a Hidden Object Puzzle in less than 1 minute.
Found your way inside the lighthouse.
Finish any Hidden Object scene with less than 3 misclicks.
Fix the radio.
Enter the shipwreck cemetery.
Saved your ally from a tight spot.
Find a direct way to get behind the closed gates.
Finished 5 puzzles in a row without using the Skip button.
Visited a local bar.
Finished a puzzle in less than 1 minute.
Witnessed the devastating attack of the sea monster.
Arrived on the pier.
Tried to get through the labyrinth without the map.
Finished all the puzzles without using the Skip button.
Finished all Hidden Object Puzzles.
Finish a game of Mahjong in less than 1 minute.
Finish half of all the games of Mahjong.
Finish all the games of Mahjong.