Checklists
Lost Ark Walkthrough
This Stellar Blade guide provides a complete walkthrough for the Lost Ark Side Quest, which can be obtained when talking to Mann in The Presence Chamber. This guide will explain everything you need to know about completing this side quest, including where to find all passcode letter locations and how to solve the Ark Puzzle System.
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Lost Ark Side Quest Walkthrough
Speak to Mann in The Presence Chamber, where he will ask you to track down the Radical. From there, you will have to hunt down a rebel who was first spotted around Xion's alley. Go to the location marked on your map, and you will come across the body of the radical. Investigate the body, and you will get the Introducing the Ark-Tech's Ark! document.
After investigating the body, head over to the second location that has just been marked on your map. Check at the device next to the entrance of the Ark, and you will receive Experience Ark-Tech's Ark document. You will then be required to find 6 Passcode letters spread throughout the city of Xion.
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All Lost Ark Passcode Letter Locations
The Passcode will be hidden in terminals on the walls of the buildings of Xion. Activating these terminals will unlock one Passcode letter each. It does not matter the order in which you uncover them.
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Passcode Letter 1
The first letter is just downstairs at the entrance of the Lost Ark.
Passcode Letter 2
The second passcode letter is near the Cafe that leads to the Presence Chamber's path across the street.
Passcode Letter 3
The third Passcode letter is located right around the middle of the city of Xion.
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Passcode Letter 4
The fourth Passcode letter is in the alleyway near Roxanne's shop.
Passcode Letter 5
The fifth Passcode letter is in the left alleyway near Xion's entrance, and next to Francis' bookshop.
Passcode Letter 6
The sixth letter is located near the stairs leading down to the Sister's Junk location.
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How to Solve the Lost Ark Puzzle System
The answer for the Lost Ark Puzzle System is θμκαεr. You have to read every letter in a clockwise manner. In this case, θ is 12, μ is 1, κ is 2, and so on and so forth until you reach the end.
Once inside, you have to investigate four bodies in order to determine what happened inside of the Ark. The first one is right at the door. The first body has the Lament of the Trapped document.
There are two bodies trapped in the same room when you take a right. The two bodies give you the Who Are You Guys? and Let Me Out documents.
There's one body near a chair, kneeling. This will give you the Monolog of a Trapped Man document.
Next, check the monitor inside the room where you found the two bodies near each other. This will show you that Ark-Tech delivers its best service by protecting its customers' documents.
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After checking the monitor, the building will go into lockdown. To escape, destroy the panels near the doors.
After getting out of the building, go back to Mann to tell him your findings to collect your rewards:
- Shock Grenade x2
- Smart Mine x2
- Pulse Grenade x2
Looking for more side quests? Check out our complete Stellar Blade side quest guide!
