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