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