Here is the full list of all 32 The Ghost Ship achievements.
Find the key to seal the curse.
Unite a father and daughter.
Gain the ability to dig.
Find Simon's watch.
Find the farmers scythe.
Find a flower.
Score some baskets.
Dream about a time before.
Gain access to a boat.
Escape a shark attack.
Kill the undead.
Bully the undead.
Gain access to the captains quarters.
Place all 4 statues.
Solve the weight room puzzle.
Take down an abomination.
Seal the curse.
Help Simon.
Listen to the whispers.
Solve the spindle puzzle.
Help others when given a chance.
Be cruel to prisoners.
Find all bottled messages in Hollow Point.
Find all bottled messages on the ship.
Find the bartenders daughters hiding spot.
Find the stone of darkness.
Find the captains favorite drink.
Find the nuns necklace.
Find the captains dagger.
Hallucinate spiders for 5 minutes in total.
Hallucinate ghosts for 5 minutes in total.
Spend 5 minutes in total on the verge of losing your mind.