The Coffin of Andy and Leyley: Episode 3 Achievement Guide

How to unlock all episode 3 decay route achievements

 

Routes

This episode features two distinct paths, some choices are exclusive to a particular route, so be sure to frequently save if you want all achievements.

The route system
The episode branches into two major routes based on a key decision in Episode 2:
Route A – Triggered if you did not shoot Andrew in the dream sequence.

Route B – Triggered if you did shoot Andrew in the dream sequence.

Each route contains unique achievements, while a few can be obtained regardless of the path you choose.

Route A Achievements

Remember this route is only triggered if you did not shoot Andrew in the dream sequence

Achievements

1. Sealed fate: Accept things as they are.
Inside the car, you’ll be asked to choose between “Andrew” or “Andy.”

Selecting “Andy” locks you into a specific ending, which guarantees this achievement.

If you’d like to experience both endings, save your game before making this choice

2. Perfect Score: 
Nailed the test like a genius.
Later in Route A, you’ll find yourself in a room with a chalk outline on the floor.

When the phone rings, you’ll have to answer three True or False questions.

Choosing “False” for all three will unlock this achievement.

3. Mathematical Mind: Helped with homework like a responsible sibling.
After the test sequence, you’ll return to your apartment, where Leyley asks you to sign a suspension letter.

Instead of doing that, interact with the couch to find her homework.

Complete the math questions correctly to earn this achievement.

4. Endless Ashleys:
 So many… but not enough.
In the following section, you’ll need to place four figures on a stage.

Go to the back room, where you’ll encounter multiple Ashley lookalikes.

Eliminate every single one to unlock this achievement.

5. Slow Decay:
 Saw things through to the bitter end.
This is a story-based achievement. Simply completing Route A will earn you this one.

Route B Achievements

Before progressing through Route B, follow these steps to set up your run:

1. Find the Engagement Ring:

  • After exiting the gas station, you’ll enter a forest puzzle section.
  • On the third screen, take the upward path instead of the left one.
  • You’ll discover an engagement ring—this is essential for one of the endings.

2. Choose Wisely in the Car:

  • Pick “Andrew” as your choice inside the car.
  • This keeps both major endings available; choosing “Andy” will lock you into the bad ending.

1. The Prophecy Fulfilled: A game of tag… won.
After eliminating the campers, Ashley will be chased into a dead end by Andrew.

To unlock this achievement, successfully catch her before she escapes.

The game allows you to retry if you fail, so don’t worry about saving beforehand.

2. The Dead-End Path: Sometimes, there’s no way out.
Progress through Route B until you’re given a choice: drop the engagement ring or hold onto it.

Choosing to drop it locks you into the worst possible ending and grants this achievement.

If you picked “Andy” earlier in the car, you’re forced into this ending.

3. Shots Fired: Held on and saw it through.

To access this ending, you must:

  • Pick up the engagement ring in the forest.
  • Select “Andrew” in the car.
  • Choose to hold onto the ring when given the choice later.

This leads to an alternate ending, unlocking the achievement.

Universal Achievements

These can be unlocked regardless of which route you choose.

1. Buried Secrets: Discovered something left behind.
In the Episode 3A prologue, your Grandma will send you out to collect blueberries.

Grab the Trowel near the house and head into the forest.

In the bottom-right corner of the screen, you’ll find a dirt mounddig it up to reveal a time capsule.

2. Stealth Expert: Got away without a fuss.
At the gas station, Ashley will go into the restroom while two cops enter the store.

To escape unnoticed:

  • Interact with the magazine stall near the entrance.
  • Wait for one officer to start moving toward the sandwich section.
  • Quickly reposition yourself to avoid detection.
  • Knock on the restroom door, retrieve Ashley, and return the car keys.
  • Leave the store without raising suspicion.

3. No Loose Ends: Took care of all the problems.
During the sequence where you hunt down the campers, one of them (a child) will flee into a car.

Smash the car window with a rock, then interact with the child to… remove any witnesses.

4. Just Wait It Out: Didn’t take the easy way out.
Near the end of the game, after dealing with the campers, police sirens will start blaring.

A portal will appear—ignore it and stand still for a few moments instead.

Doing so unlocks this achievement.

Bonus Achievement

This achievement isn’t actually in Episode 3A but was added in the same update.

. Wrong Place, Wrong Time: The Warden had other plans for you.
During Episode 1, when playing as Ashley in the cultist’s apartment:

  • Finish cleaning up the blood.
  • Once you hear a knock at the door, run straight to the balcony door.
  • This leads to an alternate ending where you get caught, unlocking the achievement.

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