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.
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.
Talk to The Pipe in the correct disguise.
Disappoint Mycroft.
Refuse to help Mycroft.
Talk to Dilwyn in his hat.
Acquire Sherlock's famous violin.
Disorient ten enemies with the snuffbox.
Let an old man have his retirement.
Solve all the cases for the police.
Find the book.
Kill fifteen enemies.
Hold an eel by the tail.
Kill five enemies.
Arrest twenty-five enemies.
Investigate the third accident.
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.