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