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