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