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