This isn't the first guide on Steam for this achievement, but for some reason the other guides aren't showing up in the Popular Steam Guides. Since I wrote this in an attempt to get it to appear there for people to easily find it, I did my best to improve upon past efforts by other writers. I used this guide as a reference if you are interested: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3305821181 Anyways...

You must score SS in DEDUCTION, JUDGEMENT, RDM (Reasoning Death Match), and STAMINA to attain an SS rank for a Mystery Labyrinth.

So how do we do this? It's more simple than you'd think: Just make no mistakes. Trying to destroy as much Noise and performing as many Daring Dodges (dodging at the last second) as you can in Reasoning Death Matches might also help, though I'm not sure.

You should save often as a habit, but if you forget to save and make a mistake, close the game, restart it, and select Continue. That should reload to just before you made the mistake.

There is no penalty for using Assist to shield yourself, so use it if it helps.

Assuming you've used chapter select to return to a previous Mystery Labyrinth, you should know your skill tree has been reset. Should you choose to reacquire your skills, DO NOT equip the Stamina skills, as they will lower your rank because they only extend the gauge and do not refill your Stamina when set in the Mystery Labyrinth.

Also assuming you've finished the story and have returned solely to earn missing achievements, you can hold RB (Xbox controller/Steam Deck) to skip dialogue and cinematics, as well as fast-forward Reasoning Death Match and Shinigami Puzzle.

Lastly, though it is not this guide's intended purpose, you can use this guide if you're stuck and need help progressing the story. Just make sure the question or argument you're on is the last one on screen and the next one is hidden until you scroll to try to avoid spoilers, but ONLY use this guide if you are completely stumped if that's why you're here.

Now then, here's how to earn every SS rank in RAIN CODE:

Round 1: Refute "You're the only one who could have done the crime!" with Coffee in Dining Car.

Round 2: Refute "And only pretended to drink it!" with Thoughtography Image.


The answer to "Is the culprit one of the six on the train?" is Yes.


Round 1: Refute "You must have had an accomplice!" with Testimonies of Two Detectives.

Round 2: Refute "You secretly stopped the train and let your partner board!" with Operations Log.


Shinigami will answer "Everyone was dead, so how did the culprit pull it off?" for you, so don't worry about it.


Question 1: The answer to "Who was the last person to die during this incident?" is The culprit.

Question 2: The answer to "Who set fire to the dead culprit?" is The culprit.

Question 3: The answer to "Who was the last person to be burned to death?" is Zilch.


"Conclusion: Zilch killed the other four then set fire to himself" is incorrect, so Demolish the Conclusion Door.


Round 1: Refute "And died of immolation!" with Knife in Corpse.

Round 2: Refute "Y-Yeah! It was to knock himself out!" with Coffee in Dining Car.


The answer to "Detective Zilch's death was actually a _ _ _ herring" is R E D.


The answer to "What proves the culprit played dead? is Red Herring.


Question 1: The answer to "Was what Yuma saw through the window actually Zilch?" is Yes.

Question 2: The answer to "Was the burned corpse in Car 1 actually Zilch?" is No.

Question 3: The answer to "Zilch swapped places with the corpse in the infirmary..." is Before Yuma entered.


The answer to "Where was the burnt swapped-out corpse hidden?" is under the bed.


Refute "There was no corpse to replace anyway!" with Aphex's Corpse.


The answer to "When moving the body from Car 1 to Car 5, the culprit..." is Moved through the train.


Round 1: Refute "No issues occurred during the trains operation..." with Blackout and Shaking.

Round 2: Refute "The blackout was just a bad contact!" with Backup Control Unit.


The answer to "The Main Control Unit was lost when Car 1 was _ _ _ _ _ _ _" is D E T A C H ED.


The answer to "The body was transported along with the entire _ _ _" is C A R.


Refute "There's no way to shuffle car trains around!" with Route Map.


The answer to "From the start, the Amaterasu Express was a _-car train" is 4.


Locked Obstacle 1: Refute "There's no evidence they ever swapped!" with Distorted Plate.

Locked Obstacle 2: Refute “You have no hard evidence proving that location was the first car!” with Bloodstains on Interior Lock.


The answer to "Where was Zilch hiding?" is Main Control Room A.


Part 01 - The Train Departs: The answer to "Where did Yuma rush to?" is Amaterasu Express.

Part 02 - Four Murders 1: The answer to "What was used to put the detectives to sleep?" is Knockout Drug.

Part 03 - Corpse Red Herring: The answers to "What was used to break the window?" and "What was used as a red herring?" are Fire Extinguisher and Knife and Cushion, respectively.

Part 04 - The First Body: The answer to "Where was the culprit hiding?" is Under the Bed.

Part 05 - Car 1 Red Herring (1): The answers to "What was the culprit doing in the Main Control Room?" and "What happened when Car 1 was detached?" are Train Detachment and Blackout, respectively.

Part 05 - Car 1 Red Herring (3): The answers to "What did the culprit burn?" and "What happened after exiting the tunnel?" are Car Number Plate and Attachment to Car 1, respectively.

Part 06 - The Last Body: The answer to "Which body was found last?" is Aphex's Body.

Part 08 - The Culprit's Identity: The answer to "Who is the culprit?" is Zilch.

The answer to "Where did the culprit flee from?" is the shutters.


Question 1: The answer to "What did the culprit use to escape from the high location?" is Burnt remains of a strange rope.

Question 2: The answer to "What traces did using the rope leave behind?" is Marks on two dolls under window.

Question 3: The answer to "What were the rope's burnt remains originally?" is Rope ladder.


Refute "And escaped via the rope ladder." with [Clocktower] Fear of Heights.



The answer to "Where did the culprit flee from?" is the vent.


Refute "There's no foothold to use to reach it." with [Secret Club] Nails Beneath Vent.



The answer to "Where did the culprit flee from?" is the door.


The answer to "Because of the culprit, what happened to the key?" is Thrown in.


The answer to "The culprit used a _ _ _ _ _ _ to move the body" is S T R I N G.


Refute "Shows no sign it was ever moved..." with [Mansion] Bloodstains on Corpse.


Question 1: The answer to "What position was the corpse in before it was moved?" is Upper body sitting up.

Question 2: The answer to "What was used to sit the body upright?" is A thin string.

Question 3: The answer to "Why was the corpse lying on its back at the time of discovery?" is The string was retrieved.


Step 1: Interact with the Vent.

Step 2: Interact with the Doll.

Step 3: Interact with the Corpse.
The answer to "Where was the fishing line passed through next?" is Under the neck.

Step 4: Interact with the Vent again.

Step 5: Interact with the Door.
The answer to "Where was the key thrown in from?" is The vent gap.



The answer to "Where did the culprit flee from?" is the door.


The answer to "Was the key thrown in by the culprit?" is No, so let the timer expire.


Step 1: Interact with the Painting.
The answer to "What was the first thing the culprit did to create a locked room?" is Nail the doll to the painting.

Step 2: Interact with the Wall with a Window.

Step 3: Interact with the Door.

Step 4: Interact with the Awning Window.
The answer to "What happened to the key?" is Nailed to the painting with the doll.

Step 5: The answer to "What was the last thing the culprit did?" is Knocked the painting towards the room.


The answer to "Who is the Nail Man?" is the Priest.


Round 1: Refute "The Nail Man is the worshipper!" with Persons with Access to Incinerator.

Round 2: Refute "The servant was able to commit the crimes!" with Thin Person.

Round 3: Refute "The nun was absolutely able to commit the crimes!" with [Mansion] Fishing Line Locked-Room.


Refute "Of course there's no evidence!" with [Clocktower] Suspicious Footprints.


The room that's different from the others is the Third Locked Room.


The answer to "This locked room is different from the others because of the victim's _ _ _ _ _" is D E A T H.


The answer to "Why was the cause of death made to look like strangulation?" is The work of a copycat.


The answer to "Who is the copycat killer?" is the Worshipper.


Refute "Anyone could've done it!" with Non-Public Information.


Locked Obstacle 1: Refute "You didn't even check the crime scenes back then!" with About Halara's Forte.

Locked Obstacle 2: Refute "What you saw is only what I saw the moment the corpse was discovered!" with [Art Gallery Storage] Paint on Floor.


Part 02 - Secret Club Murder (1): The answer to "Where did the culprit leave the room from?" is Vent.

Part 02 - Secret Club Murder (2): The answer to "What did the culprit use to climb the wall? is Nails.

Part 03 - Mansion Study Murder (1): The answers to "What did the culprit tie to the vent?" and "What did the culprit pass the line through?" are Fishing Line and Eyeless Doll, respectively.

Part 03 - Mansion Study Murder (2): The answer to "Where did the culprit pass the line through last?" is Back of Corpse's Neck.

Part 04 - Art Gallery Murder (2): The answer to "What was nailed to the doll?" is Key.

Part 05 - Clocktower Murder: The answer to "What did the culprit use to escape?" is Rope Ladder.

Part 06 - Destroying Evidence (2): The answer to "What did the culprit use to destroy evidence?" is Incinerator.

Part 07 - Nail Man's Identity: The answer to "Who is the Nail Man?" is Priest.

Part 08 - Copycat's Identity: The answer to "Who is the Nail Man's copycat?" is Worshipper.

Round 1: Repel "It's clear who the culprit is."

Round 2: Refute "At that moment, she mixed in the poison to commit the crime." with Chemistry Lab Poison.


Refute "I put real poison in the vial..." with Poison Vial.



Question 1: The answer to "When was the glass set on the stage?" is Before the play.

Question 2: The answer to "When was the poison placed in the glass?" is During the play.


Refute "She shot the poison straight into the glass!" with Wine Glasses.


Round 1: Repel "Then it has to have been Kurane!"

Round 2: Refute "She dripped the poison right in..." with Lighting Staff Testimony.


Refute "She added the poison from her pocket!" with Costume Staff Testimony.



Question 1: The answer to "What was used to transport the poison?" is Paintbrush.

Question 2: The answer to "What was the poison brushed onto?" is Another glass.

Question 3: The answer to "What happened to the other glass?" is Switched with the used glass.


The answer to "Who could have brought the poison to the stage?" is Yoshiko.


The answer to "What was the glass put in to be transported?" is A pouch.


Refute "Secretly in the dark!" with Yoshiko's Actions.



Question 1: The answer to "Who shuffled the glasses during the Duel of Poisoned Cups?" is Waruna and Karen.

Question 2: The answer to "Who chose a glass first?" is Karen.

Question 3: The answer to "Which glass had the poison?" is The glass Karen chose.


The answer to "Did Waruna know which glass had the poison?" is No.


The answer to "How did the culprit make Karen chose the poisoned glass?" is the spotlights.


The answer to "Who made Karen pick the poisoned glass?" is Kurane.


Refute "You slipped the poison into the glass, didn't you?!" with Lighting Staff Testimony.



Question 1: The answer to "What Aiko's death six months ago suicide or homicide?" is Homicide.

Question 2: The answer to "Where was Aiko murdered?" is Flower bed.

Question 3: The answer to "What weapon was used to kill Aiko?" is Brick from the flower bed.

Question 4: The answer to "Who murdered Aiko?" is Karen.


The answer to "The only way the crime was possible was by having an..." is AC CO MP LI CE.



The first thing to discuss is How was the poison brought to the theater hall?


The answer to "What did Yoshiko do with the poisoned glass after bringing it?" is Handed it to Waruna.


The answer to "How was the poisoned glass chosen?" is Kurane guided to it.


The answer to "Who murdered Karen?" is Yoshiko, Waruna, and Kurane.


Locked Obstacle 1: Refute "There's no reason for us to team up!" with Two Shot Photo with Yoshiko.

Locked Obstacle 2: Refute "There's nothing connecting us!" with Two Shot Photo with Waruna.

Locked Obstacle 3: Refute "We have nothing to do with each other!" with Two Shot Photo with Kurane.

Locked Obstacle 4: Refute "There is...no bond between us!" with Group Photo.


Part 01 - Origin of the Case (1): The answer to "What weapon did Karen use?" is Brick.

Part 01 - Origin of the Case (2): The answer to "What was Aiko's death disguised as?" is Suicide by Jumping.

Part 03 - Poisoned Glass: The answers to "Where was Yoshiko headed?" and "What did Yoshiko apply to the glass?" are Chemistry Lab and Poison, respectively.

Part 04 - Swapped Glasses: The answer to "What did Waruna do?" is Glasses Are Swapped.

Part 05 - Guidance to Glass (1): The answer to "What did Kurane use to guide Karen?" is Spotlight.

Part 05 - Guidance to Glass (2): The answer to "Why did Karen take the poisoned glass?" is Note in Script.

Part 06 - Culprit's Identity: The answer to "For whom did the trio commit the crime?" is Aiko.

Refute "Confess to shooting Shachi on the hideout's roof!" with Security Camera Footage.


The answer to "What murder weapon was used in this case?" is Shachi's gun.


Refute "You shot from the roof of the building next door!" with Parallel Gunshot Wound.


The answer to "Was it suicide or homicide?" is Homicide.


The answer to "What is the reasoning behind it being a homicide?" is The gun.


The answer to "Looking at his gun, you can tell Shachi's dominant hand is his..." is L E F T.


Round 1: Repel "Shachi definitely committed suicide~!"

Round 2: Refute "Shachi shot himself with the gun in his dominant hand." with Shachi is Left-Handed.


The answer to "Where did the culprit shoot the victim from?" is Roof of the hideout.


When asked "Which memory will be recreated?", select When the rooftop was first entered.


Round 1: Repel "No one could've left that rooftop."

Round 2: Refute "See? There's simply no place to run!" with Drain.

Round 3: Repel They dove into the drain.


The answer to "Who was capable of committing this crime?" is Resistance leader.


The answer to "What would be necessary for the culprit to commit the crime?" is Be good at swimming.


The answer to "Who killed Shachi?" is Icardi.


Round 1: Refute "Margulaw shot Shachi on the roof!" with Margulaw's Alibi.

Round 2: Refute "And made it look like suicide!" with Shachi's Gun Designed by Iruka.

Round 3: Refute "Then escaped through the drain!" with Servan's Traumatic Experience.


The answer to "What was the purpose of the bombing?" is Diversion.


The answer to "What was the culprit doing during the diversion?" is Flooded Marunomon District.


Refute "We were in a noble battle to end the disparity between rich and poor!" with Marunomon District Safe.


Part 01 - Hijacked Plan: The answer to "What did Yuma set up for the resistance?" is Surveillance Camera.

Part 02 - The First Explosion: The answer to "Where did the bombing occur?" is Phone Booth.

Part 03 - Rooftop Murder (1): The answer to "What weapon did the culprit obtain?" is Shachi's Gun.

Part 03 - Rooftop Murder (2): The answer to "The culprit placed the gun in which person's hand?" is Shachi's Right Hand.

Part 04 - Rooftop Escape (1): The answer to "Where did the culprit flee from?" is Opened Drain.

Part 05 - Flooded Marunomon: The answer to "What did the culprit do in Marunomon?" is Submerge.

Part 06 - Crime's True Purpose: The answer to "Who is the culprit?" is Icardi.

Round 1: Refute "There couldn't be an intruder!" with Shoe Print on Ama-Pal's Head.

Round 2: Repel "You proved that yourself!"

Round 3: Refute "There's no place to hide in the critical lab..." with Air Lock Decontamination Device.


The answer to "Was there an intruder?" is Yes.



The answer to "Why is "deactivated security by cutting power" not correct?" is Security Power Supply.



The answer to "Why is "the doctor committed suicide" not correct?" is Stab Wounds in Back.



The answer to "Why is "invited in by the doctor" not correct?" is Security Log.



The answer to ""Entered and killed via Spectral Projection" is wrong because..." is Ghost Form Traits.


The answer to ""Who" is capable of overcoming the security system?" is AM A- PA L.


The answer to ""Who are you?!" was directed at who?" is No one.


Refute "The doctor was loyal to Amaterasu!" with The Doctor's Email Records


The answer to "How did the doctor plan to escape Kanai Ward?" is Swapping Places, which is proven by The Doctor's Notes.


The answer to "The culprit entered the lab before Ama-pal" is Yes.


The answer to "Where was the culprit before the crime was committed?" is the air lock room.


The answer to "How did the culprit use Ama-Pal?" is Neither.


Question 1: The answer to "Where was the culprit before the crime?" is On top of Ama-Pal's head.

Question 2: The answer to "How did the culprit use Ama-Pal?" is As transportation.

Question 3: The answer to "What caused Ama-Pal's malfunction in the air lock?" is Culprit jumped on it.

Question 4: The answer to "Why didn't the culprit appear on the camera?" is They were on top of the head.


The answer to "When did the culprit get off Ama-Pal?" is While opening the door.


Refute "If Ama-Pal's line of sight changed just a bit..." with Ama-Pal's Design.


Round 1: Repel "It wouldn't be from behind!"

Round 2: Refute "He would've heard someone coming!" with Information on Dr. Huesca.


Refute "No living human can breach it!" with Fubuki's Forte.


Refute "You'd die before reaching Huesca." with Toxic Gas Properties.


Repel The hitman.


The answer to "What was the clue leading to the true culprit?" is Photo.


The answer to "Who is the true culprit?" is Yakou Furio.


Question 1: The answer to "Why did Yakou send the death threat?" is To make it seem like the doctor was in danger.

Question 2: The answer to "Why was the death threat sent to the Peacekeepers?" is To use the Disguise ability.

Question 3: The answer to "Who caused the blackout?" is Fink the Slaughter Artist.


Part 01 - Target's Location: The answer to "Where is the secret lab located?" is Amaterasu Corporation.

Part 02 - Crime Preparations: The answer to "Death threat sent to the detective agency and also..." is Peacekeepers.

Part 03 - Lab on High Alert: The answer to "How was Dr. Heusca communicated with?" is Intercom.

Part 04 - During the Blackout: The answer to "Where did the culprit hide?" is Decontamination Device.

Part 06 - How to Bypass Security (1): The answer to "What did the culprit use to get past security?" is Ama-Pal.

Part 06 - How to Bypass Security (2): The answer to "Whose power was used in the panel room?" is Fubuki's Power.

Part 07 - Dr. Heusca's Murder (2): The answer to "What weapon was used to kill Dr. Heusca?" is Knife.

Part 08 - Culprit's Murder (1): The answer to "Who killed the culprit?" is Fink.

Part 08 - Culprit's Murder (2): The answer to "Who is the culprit?" is Yakou.


The answer to "Have all the mysteries been solved?" is Some mysteries remain.


The answer to "The remaining mystery is Dr. Huesca's _ _ _ _ _" is E M A I L.


Round 1: Repel "It'S solVed!"

Round 2: Refute "There IS NOTHiNG cOnNECtiNG Yakou to AnoNYmous!" with Lab Map.

Round 3: Refute "ANYONe coulD fINd it!" with Storage Key.

The answer to "What was the cause of Amaterasu and Kanai Ward's development?" is Homunculus Research.


The answer to "Why did the United Government request the homunculus research?" is For military purposes.


Round 1: Repel "Homunculi are just a fantasy."

Round 2: Refute "It was a complete failure." with Homunculus Experiment Report Memo.


The answer to "Who is the person with the "world's greatest mind"?" is Memo on Corpse.


The answer to "What occurred in Kanai Ward in the name of scientific research?" is Project: Homunculus.


The answer to "What was done in Kanai Ward for the sake of research?" is Blood Test for All Residents.


Question 1: The answer to "What was created from Project: Homunculus?" is Kanai Ward's Residents.

Question 2: The answer to "What happened as a result of Project: Homunculus?" is The Blank Week Mystery.


The answer to "All of Kanai Ward's residents were _ _ _ _ _ _ _ during the Blank Week" is R E P L A C ED.


Round 1: Repel "They couldn't of been swapped!"

Round 2: Refute "Their memories would be totally different too..." with Homunculus Characteristics.

Round 3: Refute "There wouldn't be a gap in their memories!" with Defective Homunculus.


Refute "No one was killed by the homunculi!" with The Doctor's Confession Video.


Question 1: The answer to "What is the reason for the unending rain in Kanai Ward?" is To block out the weakness of the homunculus.

Question 2: The answer to "Where do Kanai Ward's dead end up?" is Rural village.

Question 3: The answer to "What is the source of nutrition for Kanai Ward residents" is Meat buns.


The answer to "Kanai Ward resident's _ _ _ _ blood is evidence of their physical abnormality." is P I N K.


Part 01 - The Beginning of Things: The answer to "What was being researched?" is Homunculi.

Part 02 - Running Project: Homunculus: The answers to "What was used as an excuse to collect DNA?" and "Who directed Project: Homunculus?" are Blood Test and Dr. Huesca, respectively.

Part 03 - Defective Homunculus Defects: The answer to "What causes defective homunculi to go berserk?" is Sunlight.

Part 04 - "The Blank Week Mystery" (1): The answer to "What did Makoto create to stop the defective homunluci?" is Rain Cloud Generator.


Question 1: The answer to "When did Makoto arrive at Kanai Ward?" is Three years ago.

Question 2: The answer to "What was happening in Kanai Ward when Makoto arrived?" is "The Blank Week Mystery".

Question 3: The answer to "What did Makoto do to protect Kanai Ward?" is Isolation.

Question 4: The answer to "What did Makoto do as the CEO?" is Ended homunculus research.

Question 5: The answer to "What crime did Makoto commit?" is Mass kidnapping.

Question 6: The answer to "The Master Detectives were assembled..." is To oust Yomi.


The answer to "What is Makoto?" is HO MU NC UL US.


Question 1: The answer to "Where was Makoto born?" is UG research facility.

Question 2: The answer to "Makoto's DNA is based on..." is Number One.


The answer to "Identify what feels out of place!" is the cut on Makoto's left arm.


Question 1: The answer to "How did Makoto enter the Mystery Labyrinth?" is Coalescence.

Question 2: The answer to "Who used Coalescence?" is Makoto.

Question 3: The answer to "Yuma's true identity is..." is Number One.


The answer to "Who gave up their identity as Yuma Kokohead?" is Ramen Stand Owner.


This is it. Just repel every blue statement you can and don't get hit. Destroying as much Noise as you can may also help improve your rank. Once the battle is over, it doesn't matter whether you choose to Destroy the Mystery Labyrinth or Stay in the Mystery Labyrinth, so choose whichever you like.

You are now the "King of the Mystery Labyrinth," and if you've earned every other achievement, you should now be the "Eliminator of All Mysteries" as well. If you've been focused on the achievements after finishing the main story, you may have forgotten about the Substories. There are no achievements for them, but if you've enjoyed the main story, you should play those too. If I've made any errors, please inform me about them so I can correct them.

Good rain to you, Master Detective!