[Contains mild spoilers, please proceed with caution!]
This guide goes over all 19 achievements available in the Twilight Railway DLC.
It is separated by chapter and is in order of the list available after finishing the game.
Some sections have been spoilered, such as puzzle solutions or other minor spoilers.
Additionally, the locations of the extra train tickets are included.
Chapter 1
2. Enter Shion’s birthday as the password on the locked drawer in father’s room.
Don’t remember it?: it’s 0703!
3. Play Aoi’s melody on the piano.
Pattern to solve: (Z > R > Z > L)
4. Replace the childhood photo in the frame in the kitchen before going into Shion’s room.
5. Find Aoi on the balcony after waking up from Shion’s flashback.
6. Turn to Aoi during the chase with Haru.
7. Walk backwards during the chase with Haru.
Chapter 2
9. Write “HARU” when solving the “SEA” painting puzzle.
10. Interact with the mirror after collecting Aoi’s head until Shion and Haru’s reflections appear.
11. Collect Shion’s room key from the china cabinet after their parents have exited the kitchen during Aoi’s birthday celebration. Feel free to interact with the bed and open the diary to unlock additional dialogue with Aoi.
12. Interact with the front door 3 times while father is fixing the music box.
Chapter 3
Pattern to solve: (Top left > top right)
14. Wait in the train for 30 minutes or more after collecting the crumpled flower and telling Haru to wait.
15. Don’t take a single hit during the final battle.
16. Save at every save station throughout the game.
Need a hint?: a save is usually present in every train car and in every apartment instance. Save at each one at least once.
Need a list of locations?
CHAPTER 1: in the first train car, in the main floor of the apartment, as Shion during his flashback.
CHAPTER 2: in the second train car, in the main floor of the apartment, as Aoi during her flashback.
CHAPTER 3: in the third train car, in the train car with Aoi, in the “final station”, in the white field before the final battle.
17. Lose during the final battle and choose to “give up”.
18. Win during the final battle.
19. Enter the conductor’s room in the irreversible passage (while Aoi is present) after obtaining all 4 tickets and talk to the shadow.
Need a hint?: he’ll appear after interacting with the right lockers.
Train Ticket Locations
1: On the path to the railroad, walk forward with Haru until the menu changes (Shion’s icons will grey out). Afterwards, return to the spawn point.
2: In the “final station”, interact with the ticket gate and return to the upper platform. There will be an interactable item on the bottom left side of the map.