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