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