Here is the full list of all 39 Sherlock Holmes Chapter One achievements.
Get every achievement.
Remember everything.
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.
Refurbish the entire manor.
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.
Complete all Cordona Stories.
Disappoint Mycroft.
Find the book.
Hold an eel by the tail.
Talk to Dilwyn in his hat.
Investigate the third accident.
Acquire Sherlock's famous violin.
Refuse to help Mycroft.
Open Violet's room.
Save Goliath's life.
Find all the books in the Bazookaeology trilogy.
Open Sherlock's room.
Uncover all of the treasures.
Fight in all of the bandit lairs.
Disorient ten enemies with the snuffbox.
Kill fifteen enemies.
Kill five enemies.
Let an old man have his retirement.
Solve all the cases for the police.
Arrest twenty-five enemies.
Arrest ten enemies.
Prank Mrs. Nini.
Solve the first case on Cordona.
Eavesdrop on your first piece of gossip.
Try to take the easy way out.