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