Agatha Christie - Hercule Poirot: The First Cases - 100% Achievements

All achievements in the game

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 on 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 [1/15]. Outside. You can't actually see any windows there, the inspection point is in the middle of the ground on the left.
Missable [2/15]. Angeline's room.



Fine-toothed comb
Inspect all items in the prologue


Missable. You'll unlock it later in this chapter, but I've put it here so you can start tracking early. There are 38 objects you can inspect in this chapter. The list is below.

Outside:
1. Muddy footprints
2. Waterlogged patch
3. Open window
4. Front door
5. Overgrown trellis
6. Flower bed
7. Bench carving
8. Wooden ladder
9. Side door
10. Overgrown grass
11. Quote on a plaque

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

First floor:
19. Book (Romeo & Juliet)
20. Door (Bathroom)
21. Missing painting
22. Door (Bedroom)

Angeline's room:
23. Jewellery box
24. Abandoned poker
25. Photograph of a gentleman
26. Broken glass
27. Open window
28. Rectangular dust recess
29. Fireplace
30. Cleaning rag

Lounge:
31. Personalised handkerchief
32. Wet parcel
33. Selection of pastries
34. Poker stand
35. Letter
36. Note
37. Wine bottle
38. Collection slip


Work-life balance
Examine all items in the staff-related areas


Missable 1-8/23. I'm not sure if Lounge is considered a staff-related area, but I've decided to include it just in case. There are eight objects in there which can be inspected (listed above).



It wasn’t a burglary
Complete the 1st objective


Story. Complete your first investigation.



Angeline Van den ♥♥♥♥♥
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.



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.



Work-life balance
Examine all items in the staff-related areas


Location: Butler's Pantry
Missable 9/23. Pots and pans
Missable 10/23. Cupboard
Missable 11/23. Letter
Missable 12/23. House deeds



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.



Work-life balance
Examine all items in the staff-related areas


Location: Butler's Pantry
Missable 13/23. Letter (Staff termination)
Missable 14/23. Photograph (Staff photo)



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)



Work-life balance
Examine all items in the staff-related areas


Location: Kitchen
Missable 15/23. Pots and pans
Missable 16/23. Mounted animal head
Missable 17/23. Cupboard



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:

1. Faint footprints
   
2. Expensive lighter
   
3. Garden tools
   
4. Milk bottles
   
5. 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 ♥♥♥♥♥
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]. Angeline and Gedeon's bedroom
Missable [14/15]. Zakariya'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


Story. Unlocked while talking to Inge.



Instinct is marvellous
Make 125 deductions


Story. Create 125 mind map connections. It's not tied to this chapter, but you should unlock it here.



Ernesto da Silva
You have uncovered a secret/memory from Ernesto



Story. Unlocked while talking to Ernesto about his blackmail letter.



Inge Frank
You have uncovered a secret/memory from Inge


Story. Talk to Inge after leaving Ernesto's room.



The Search
Complete chapter 6


Story. Complete chapter 6.

Chapter 7 - The Family

Hugo Beckers
You have uncovered a secret/memory from Hugo


Story. Unlocked while talking to Hugo (Suggestive, Direct, Honest).



Work-life balance
Examine all items in the staff-related areas


Location: Staff quarters
Missable 18/23. Logs
Missable 19/23. Newspaper
Missable 20/23. Hammock
Missable 21/23. Cupboard
Missable 22/23. Luggage (Medal)
Missable 23/23. Abandoned coat



Thinking of everything
Make 150 deductions


Story. Create 150 mind map connections. It's not tied to this chapter, but you should unlock it here.



The Family
Complete chapter 7


Story. Complete chapter 7.

Chapter 8 - The Truth

Well-travelled
Visit all locations in the game


Story. Unlocked after entering the secret room.



Viscount Edwin Van Den ♥♥♥♥♥
Uncover a secret/memory from the Viscount


Story. Inspect the letter in the secret room.



Archibald Sterling
Uncover a secret/memory from Archibald


Story. Unlocked during conversation with Archibald.



Well-prepared
Resolve the blackmail and murder cases completely


Story. Unlocked after completing the final mind map.



The Truth
Complete chapter 8


Story. Complete chapter 8.

Chapter 9 - The Denouement

I like an audience
Complete the denouement


Story. Unlocked after talking to all four characters in the library.



Probably the greatest detective in the world
Pass the denouement, flawlessly


Missable. Unlocked after convincing all four characters in the library. Dialogues to select:

• Jackie: Accusing, Forceful, Disgust
  
• Hugo: Direct, Sarcastic, Sympathetic
  
• Ernesto: Direct, Straightforward, Assertive
  
• Cassandra: Suggestive, Antagonising, Sympathetic

The Denouement
Complete chapter 9


Story. Complete chapter 9.

[JadeUnicorn]

I managed to fail to get Florette Duval somehow, so it's missable.

[Rosa.]

I missed the sunken secrets one because I read the sentence about the gate only after clicking around maybe put it before the actual steps as a hint... T_T

[98765zxcv]

The Angeline achievement requires you to 'see' the broken glass, make a connection and then bring it up in conversation with her.

[CallumL199]

in Chapter 7, in the staff area, you have to get them in a certain order or it kicks you out. The medal and coat are the important ones, so get the others before those.

[Hellarious]

I didn't get Angeline's achievement for the prologue, but I used all dialog options...

[ミコトバ スサト]

thx

[Sven_Q45]

Oh I knew it so I have to start a new to get the rest of the achievements...

[catnip]

Yes, if you start a new playthrough the game deletes your progress and you start from zero.

[Sven_Q45]

Does everything have to in a single playthrough?

[Ech064]

This was an amazing guide and helped me reach 100%, thanks!