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