Sherlock Holmes Chapter One

For this achievement, you need to complete 10* Cordona Stories (any DLC cases do not count, nor do they have achievements attached to them). All are very brief cases that take 5-10 minutes each, compared to the much longer main story and side cases. These are missable, however, as they aren't required for mandatory story progression. Do these before the point of no return, else you'll have to reload an older save to do them.

List

Silence is Golden
Location: Automatically unlocked when first entering the City Hall (main story).

Pillar of Knives
Location: Automatically unlocked during the 'Love, Death and Cordona' side case.

Treasure Island – Stages 1, 2 & 3
Location: City Hall (square outside, not the actual building). You'll see a town crier, who gives you a treasure map. For these 3 stories, you need to find 8 treasures per stage, hand it in, and then accept the next stage. You need to complete Stage 1 before Stage 2, then Stage 2 before Stage 3.

You'll unlock the following when completing these 3 stories.


The Hand-Me-Down
Location: Investigate the statue on Scarlet Street, to the north of the Old City province. Image below (credit to PowerPyx)


Flashes of Merriment
Location: Interact with Poster at Legacy Theatre, south of Scadalio province. Image below (credit to PowerPyx)


The Ghost-Hunter
Location: Interact with Poster very close to the Drinking Dutchman, Southeast of Silverton province. Image below (credit to PowerPyx)


For the Birds
Location: Go to the Silver Mines Monument in Miner's End. Image below (credit to PowerPyx)


A Mad Rogue
Location: Go to the Fortress of the Holy Spirit Ruins in Old City Image below (credit to PowerPyx)


The Tale of the Empty House
Location: Automatically unlocked during the story
*Note: Left this one for the end, as I unlocked this achievement at 10/11 without completing this Cordona Story. It's listed as such in your case book, but I didn't technically need it. In reality, you'll need to do it anyway for the below achievement, but if anyone can confirm whether they unlocked this achievement without needing to do this case, I'd appreciated it.