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