Here is the full list of all 39 Sherlock Holmes Chapter One achievements.
Take pity on a poor girl.
Present accurate evidence in all accusations.
Follow the rules of the Blind Duelling Club.
Talk to Dilwyn in his hat.
Uncover all of the treasures.
Complete all Cordona Stories.
Remember everything.
Refurbish the entire manor.
Investigate the third accident.
Interrogate every suspect in the safe murder as a police officer.
Talk to The Pipe in the correct disguise.
Find the book.
Disorient ten enemies with the snuffbox.
Hold an eel by the tail.
Get justice for Fabio.
Lift the curtain on bohemian life.
Open the cabinet of curiosities.
Always advocate for the refugees.
Punch first, ask questions later.
Spare the landlady's feelings.
Disappoint Mycroft.
Arrest twenty-five enemies.
Kill fifteen enemies.
Let an old man have his retirement.
Solve all the cases for the police.
Refuse to help Mycroft.
Open Violet's room.
Save Goliath's life.
Find all the books in the Bazookaeology trilogy.
Kill five enemies.
Acquire Sherlock's famous violin.
Arrest ten enemies.
Open Sherlock's room.
Prank Mrs. Nini.
Solve the first case on Cordona.
Eavesdrop on your first piece of gossip.
Try to take the easy way out.
Fight in all of the bandit lairs.
Get every achievement.