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