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