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