Resident Evil Requiem: The Final Puzzle Solution Guide
Last Updated: March 23, 2026 (text-only rendering)
To unlock this hidden achievement and solve the final puzzle, you must fulfill several specific conditions that start earlier in the game..
1. Prerequisites & Preparation (The Setup)
This puzzle is a multi-step challenge that often spans across playthroughs
- Target Reward:20,000 CP (Challenge Points)
- The "Sweet Pair":Refers to Emily (the girl you rescue) and Marie's Doll
- The "Voice":A secret child-like laughter triggered by a specific input.
2. Step-by-Step Walkthrough
Step A: The Blood Processing Requirement
- Location:Care Center Basement (Processing Room)
- Action:When you reach the conveyor belt area with body bags, do not interact with the water valve immediately
- Task:Wait for approximately 15 minutes real-time until 115 bodies have dropped into the blood pool
- Validation:When you eventually drain the water, the game should display the subtitle: "A ton of blood flowed out." (If it says something else, the requirement wasn't met).
Step B: The Grinder Challenge
- Action:After draining the pool, the grinder will activate
- Task:Navigate this section without killing any zombies yourself. You must let the grinder kill all enemies in your path.
Step C: Obtaining & Analyzing the Severed Hand
- Location:After the cutscene where "The Girl" (Shadow Ghost) loses an arm, pick up the Severed Hand near the elevator
- Action:Take the hand to the Blood Lab and use the Laser Microscope/Blood Analyzer
- The Message:It will display "Let's Play" followed by an RNA sequence: GGC-AAG-AUA-ACG-UGU-CAU.
Step D: The Toilet Easter Egg
- Location:Care Center 1F Restroom
- Action:Flush the toilet at least 8 times. This is a hidden flag required to make Marie's Doll spawn/work correctly for the challenge.
Step E: Finding Marie's Doll
- Location:Usually found in the Research Facility beneath the Courtyard or in the Collection Room (Rhodes Hill)
- Action:You must have the doll in your Active Inventory (not the item box) when approaching the final puzzle.
3. Decoding the Symbols (The Science Puzzle)
The secret code is hidden in environmental clues relating to astronomical distances:- G (Sun):Distance Earth-Sun (150,000,000 km) — Found on the side of the analyzer.
- U (Moon):Distance Earth-Moon (380,000 km) — Found inside the Hourglass in Victor's office (examine and unscrew).
- C (Star):4.2 Light Years (Distance to Proxima Centauri) — Found in "Grace Ashcroft Blood Analysis" file.
- A:The hint "Ignore A" is found via a decapitated toy at Kendo’s Gun Shop.
The Decoding Process:
1. Original Code: GGC-AAG-AUA-ACG-UGU-CAU
2. Remove all "A"s: GGC- -G- -U - -CG-UGU-C U -> GGC GUC GUG UCU
3. Convert to Symbols: G=Sun, U=Moon, C=Star.
4. The Final Input (The Solution)
- Location:Lead Researcher's Office (Puzzle Box)
- Conditions:
1. Grace must be carrying Emily.
2. Marie's Doll must be in your inventory.
3. You must have scanned the hand previously.
Enter the following sequence into the Sun/Moon/Star device:
Sun – Sun – Star – Sun – Moon – Star – Sun – Moon – Sun – Moon – Star – Moon
5. Completion
If done correctly, you will hear a child’s laughter (the voice) and a notification will pop up:"Congratulations. You let the sweet pair hear the voice." ---
| Step | Item/Action | Key Detail |
|---|---|---|
| 1 | Wait in Processing | 15 mins / 115 bodies dropped |
| 2 | Grinder Run | 0 personal kills |
| 3 | Severed Hand | Scan for code: GGC-AAG-AUA-ACG-UGU-CAU |
| 4 | Restroom | Flush toilet 8+ times |
| 5 | Marie's Doll | Carry in inventory |
| 6 | Final Input | Sun-Sun-Star-Sun-Moon-Star-Sun-Moon-Sun-Moon-Star-Moon |
Related reading
Disclaimer: This is an unofficial fan guide. All rights belong to Capcom. For reference only.