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