Here is the full list of all 39 Sherlock Holmes Chapter One achievements.
Talk to Dilwyn in his hat.
Get every achievement.
Investigate the third accident.
Get justice for Fabio.
Remember everything.
Lift the curtain on bohemian life.
Complete all Cordona Stories.
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.
Refurbish the entire manor.
Open the cabinet of curiosities.
Take pity on a poor girl.
Follow the rules of the Blind Duelling Club.
Always advocate for the refugees.
Spare the landlady's feelings.
Punch first, ask questions later.
Disappoint Mycroft.
Uncover all of the treasures.
Find the book.
Let an old man have his retirement.
Solve all the cases for the police.
Hold an eel by the tail.
Fight in all of the bandit lairs.
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.
Arrest twenty-five enemies.
Disorient ten enemies with the snuffbox.
Arrest ten enemies.
Kill fifteen enemies.
Kill five 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.