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Below is a walkthrough for Chapter 4: The Shinjuku Underground Labyrinth Incident in Digimon Story Cyber Sleuth: Complete Edition.
Shinjuku
Head right to trigger an event.
Shinjuku ???
When you gain control of your sleuth, follow the path deeper into the subway to trigger a battle with some Digimon. Afterwards, Arata will join you as a Guest Character. As you approach the transition to the next area, another event with Arata triggers. The path is pretty straightforward forward so keep working your way forward, fighting the Digimon then viewing the cutscenes. Eventually, you’ll reach an area with a map on the wall above a few ticket machines. Follow the path right to find a Shellmon Medal (which is south of the right chest) and 2 chests containing HP Capsule B x3 and Memory UP. When you’re ready, interact with the floating orb to trigger a fight with 2 Gotsumon. Defeat them to receive an IC Card then return to the ticket machines and use the card on the gates to the left to continue pressing on. In the next area, there will be an access point that you can use to reach the DigiLab to heal up. At the other end of the hall past the phone, you’ll encounter an Eater. Defeat it to trigger a cutscene.
Shinjuku ??? Digimon
- Dorumon
- Gotsumon
- Kuramon
- Lopmon
- Tsumemon
Detective Agency
When you gain control, interact with the whiteboard to receive the following cases:
- Side Cases
Shibuya
After completing the case (or not), head to Shibuya then enter the crossing and speak with the Pitiful High School Girl standing in the middle of the road for an event. You can then make your way back to the detective agency.
Detective Agency
Interact with the whiteboard in the agency then accept the Scramble Pentagram case. Complete the case to progress the story.
EDEN Entrance
Use the TV in the detective agency to travel to EDEN Entrance then take the stairs all the way up. At the top take a left and speak to the Mother with the ! above her head then interact with the data behind her daughter in the corner of the building.
Detective Agency
Return to the detective agency and interact with the whiteboard. Start the Nightmare Eater case and complete it for another event to progress the story. You’ll need to head up to K Cafe on Broadway 4F to pick up some more coffee beans from the owner behind the counter. This will start an event leading to Chapter 5 and kicking off another case.
