Here is the full list of all 32 The Daring Mermaid Expedition achievements.
Miss Wellington is your patron.
Lord von Tubingen is your patron.
Baroness Scharknell is your patron.
Mr. Fontana is your patron.
Collect all four patrons.
Write three letters to your patron.
Reconcile Sandoval and Madame.
Capture a mermaid.
Persuade a mermaid to go with you.
Alienate your patron.
Romance Miss Wellington.
Romance Lord von Tubingen.
Romance Baroness Scharknell.
Romance Mr. Fontana.
Romance all four patrons.
Break up with your patron.
A bloodloss of five or more.
Present seven or more pieces of evidence.
Reach the ending with 0 swimming.
Reach the ending with no blood loss.
Reach the ending with no evidence.
Perish in the mermaid city.
Live with the mermaids.
Hallucinate while presenting your findings.
Write a book based on your adventures.
Become a Scholar of the RGMS.
Become the Grand Royal Scholar.
Go to prison for fraud.
Join Lucy Smokeheart's crew.
Advise mermaid hunters on Broken Shell Island.
Do not get into the Society. Or anything else.
Discover all ten endings.