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