Agatha Christie Hercule Poirot The First Cases: 100% Achievement Guide

Here are All achievements guide in Agatha Christie – Hercule Poirot: The First Cases.

Introduction

Number of achievements: 46
Number of missable achievements: 7 (Exquisite artwork, Sunken secrets, Take a break, Probably the greatest detective in the world, What else did I miss?, Room with a view, Work-life balance)
Minimum Playthroughs: 1
Free-Roam After Story: No
Does difficulty affect achievements?: No

All achievements are fairly easy to obtain. Most missable achievements are related to inspecting objects at various locations, so as long as you are thorough you should have no problem getting them all in a single playthrough. I recommend starting each location with inspecting all items in it and zooming out and double checking nothing was missed before talking to anyone or exploring any mindmap.

There is only one save slot and it’s autosave. I recommend creating your own “chapter select” by creating a backup saves at the beginning of each chapter in case something was missed. The saves are in:

C:\Users\<your_username>\AppData\LocalLow\Microids\

Simply exit to the main menu (to ensure nothing is being written to the files)and copy the whole folder to a different location.

Achievements are presented in chronological order although it’s possible to unlock them in a slightly different order depending or your decisions like who to talk first or if you start from talking to characters or checking your mind maps.

Some achievements span across multiple chapters, they are mentioned in every relevant chapter at the beginning. These are not ordered chronologically to avoid cluttering the list.

Prologue – The Bracelet

Room with a view
Inspect every window in the game

Missable [1/17]. Outside. You can’t actually see any windows there, the inspection point is in the middle of the ground on the left.
Missable [2/17]. Angeline’s room.

It wasn’t a burglary
Complete the 1st objective

Story. Complete your first investigation.

Angeline Van den Bosch
Uncover a secret/memory from Angeline

Story. Unlocked after talking to Angeline about her father.

Luc Piette
You have uncovered a secret/memory from Luc

Story. Inspect letter on the table near Florette.

Fine-toothed comb
Inspect all items in the prologue

Missable. There are 34 objects you can inspect in this chapter. The list is below.
Outside:
1. Muddy footprints
2. Waterlooged patch
3. Quote on a plaque
4. Overgrown grass
5. Bench carving
6. Overgrown trellis
7. Flower bed
8. Wooden ladder
9. Side door
10. Open window
11. Front door

Ground floor:
12. Auction crate
13. Telephone
14. Portrait of gentleman
15. Coat (Gold band)
16. Collection of books (Collection of classic novels)

First floor:
17. Missing painting

Angeline’s room:
18. Jewelery box
19. Abandoned poker
20. Photograph of a gentleman
21. Broken glass
22. Open window
23. Rectangular dust recess
24. Fireplace
25. Cleaning rag

First floor:
26. Book

Lounge:
27. Personalised handkerchief
28. Wet parcel
29. Selection of pastries
30. Poker stand
31. Letter
32. Note
33. Wine bottle
34. Collection slip

Elizabeth Padget
Uncover a secret/memory from Elizabeth

Story. Unlocked after talking to Elizabeth about her love to Luc.

Little grey cells
Make 25 deductions

Story. Create 25 mind map connections. It’s not tied to this chapter, but you should unlock it here.

Florette Duval
You have uncovered a secret/memory from Florette

Story. Talk to Florette after confirming her innocence.

The Bracelet
Complete the prologue

Story. Complete the prologue.

Chapter 1 – Blackmail

Room with a view
Inspect every window in the game

Missable [3/15]. Room on the first floor which Poirot assumes to be his.
Missable [4/15]. Poirot’s room.

Exquisite artwork
Admire all paintings in the main hall

Missable [1/9]. Ground floor on the right side.
Missable [2/9]. First floor on the left side.
Missable [3/9]. First floor on the left side (Group of saints).
Missable [4/9]. First floor on the left side.

The Blackmail
Complete chapter 1

Story. Complete chapter 1.

Chapter 2 – The Altercation

Room with a view
Inspect every window in the game

Missable [5/15]. Library
Missable [6/15]. Salon

Exquisite artwork
Admire all paintings in the main hall

Missable [5/9]. First floor on the left side (Group of saints). It’s the same painting as in the previous chapter. This might not be required, but during my playthrough it was shown as not inspected in this chapter.

Major Felix Hagen
Uncover a secret/memory from the Major

Story. Unlocked after talking to the Major and pressuring him (Straightforward, Agreeable, Antagonising).

Well-read
Examine all books in the library

Missable. While in the library examine all books and bookcases there. There are three book collections in bookcases and five single books on tables.

Order and method
Make 50 deductions

Story. Create 50 mind map connections. It’s not specifically related to this chapter but you should unlock it here.

The Altercation
Complete chapter 2

Story. Complete chapter 2.

Chapter 3 – The Major

Room with a view
Inspect every window in the game

Missable [7/15]. Study
Missable [8/15]. Bedroom

Truth from within
Make 75 deductions

Story. Create 75 mind map connections. It’s not specifically related to this chapter but you should unlock it here.

The Major
Complete chapter 3

Story. Complete chapter 3

Chapter 4 – The Interrogations

Take a break
Stop for a refreshment during a key moment

Missable. At the beginning of the chapter inspect bottle at the bar.

Comtesse Margaux de Vos
Uncover a secret/memory from Margaux

Story. Unlocked while talking to Margaux about the Major (Flattering, Coercive).

Curious and beautiful
Make 100 deductions

Story. Create 100 mind map connections. It’s not specifically related to this chapter but you should unlock it here.

Jacqueline “Jackie” Conrad
You have uncovered a secret/memory from Jacqueline

Story. Unlocked during conversation with Angeline.

The Interrogations
Complete chapter 4

Story. Complete chapter 4.

Chapter 5 – The Secret

Room with a view
Inspect every window in the game

Missable [9/15]. Dining room
Missable [10/15]. Dining room
Missable [11/15]. Cassandra’s bedroom

Exquisite artwork
Admire all paintings in the main hall

Missable [6/9]. Second floor (spectacular piece)
Missable [7/9]. Second floor (boat)
Missable [8/9]. Second floor (forest)
Missable [9/9]. Second floor (mountain)

Zakariya Demir
Uncover a secret/memory from Zakariya

Story. Unlocked during conversation with Gedeon after discovering facts about Zakariya.

Sunken secrets
Inspect all items hidden in the snow

Missable. While outside find and inspect five objects before inspecting the main gate. The objects are:

Faint footprints
Expensive lighter
Garden tools
Milk bottles
Fallen bird feeder.

Don’t inspect the gate (Exit is impossible) until you find them all or you’ll miss this achievement.

Well-acquainted
Meet all characters in the game

Story. Unlocked after talking to Rehana.

Cassandra Van Den Bosch
Uncover a secret/memory from Cassandra

Story. Unlocked during conversation with Cassandra when she reveals the truth about Angeline.

The Secret
Complete chapter 5

Story. Complete chapter 5.

Chapter 6 – The Search

Room with a view
Inspect every window in the game

Missable [12/15]. Margaux’s bedroom
Missable [13/15]. Jackie’s bedroom
Missable [14/15]. Angeline and Gedeon’s bedroom
Missable [15/15]. Hugo’s bedroom

Gedeon Demir
You have uncovered a secret/memory from Gedeon

Story. Inspect photograph in Angeline and Gedeon’s room.

What else did I miss?
Return to the scene of the crime, alone, for a 2nd time

Missable. After inspecting the first three bedrooms you can leave to the second floor hall. Enter the Major’s study and inspect scrapped paper on his desk.

Rehana Piette
Uncover a secret/memory from Rehana