Here is the full list of all 25 Sherlock Holmes: Crimes & Punishments achievements worth 1,000 gamerscore.
Collect all possible in-game achievements.
Receive maximum personality ranking.
Reach all possible conclusions in the game.
Reach 6 correct conclusions for all 6 cases.
Disarm Mexican by shooting the gun from his hand.
Finish Half Moon case.
Complete the game.
Catch the thieves at Notting Hill Manor.
Gather 26 Character Portraits.
Interact with Toby in every case.
Finish Kew Gardens case.
Prevent Miss White from suicide.
Finish Abbey Grange case.
Save Crocker from committing suicide.
Finish 45 mini games and puzzles without skipping.
Finish Blood Bath case.
Receive 3 messages from those whom you condemned or absolved.
Retrieve the Golden Knife from the ancient temple of Mithras.
Finish 35 mini games and puzzles without skipping.
Finish 15 "Character Observations" without skipping.
Finish 25 mini games and puzzles without skipping.
Finish Train case.
Finish 10 Dialogue QTEs without a failure.
Finish Black Peter case.
Beat Cairns in a fight.