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