Hidden Chamber (Unknown Signal) Walkthrough

Hidden Chamber (Unknown Signal) Guide

Hidden Chamber (Unknown Signal) Quest Summary

During the post-game, Hugh and Diana can explore the Hidden Chamber to unlock a secret ending!

[1] Complete the Main Story.

Congrats on completing Pragmata's Main Story! Finishing the quests for the first time unlocks the Unknown Signal mode.

The new content is accessed by selecting the "Unknown Signal" option from the Main Menu.

When Hugh and Diana return to the Shelter, a worried Cabin announces that an unregistered member has been detected at a new location: the Hidden Chamber.

[2] Head to the Hidden Chamber.

Ride the Tram and travel to the Hidden Chamber.

[3] Finish all 10 Sim Pod Missions.

Inside, Hugh and Diana meets the unregistered friend along with a set of trials to complete.

Mission	How to Unlock	Challenge Details
Armor Break	Automatically available after the Hidden Chamber is reached.	Master your new weapon and reach the target area.
Jump, Jump, Jump	Get 100% in Solar Plant Sector.	Race through the simulation and reach the target area.
Round-Up	Defeat the Enhanced Bot Master, SectorGuard.	Use the Recycler to defeat the enemies and reach the target area.
Just Go For It!	Get 100% in Mass Production Array Sector.	Avoid the Recycler and reach the target area.
Battle Nexus	Defeat the Enhanced Bot Master, Creator.	Eliminate all enemies.
Container Scramble	Get 100% in Terra Dome Sector.	Rearrange the floating containers and reach the target area.
Floating Conveyor	Defeat the Enhanced Bot Master, Garden Keeper.	Defeat the enemies on the moving platforms and reach the target area.
Zero Gravity	Get 100% in Lunum Mines Sector.	Navigate through the low-gravity zone and reach the target area.
The Digger's Pit	Defeat the Enhanced Bot Master, LunaDigger.	Avoid the LunaDigger's attacks, defeat the enemies, and reach the target area.
The Final Test	Get 100% in Central Port Sector.	Defeat all the enemies.

Completing these challenges rewards players with the Lim Cannon, Obsidia and Black Neon outfits, and the Black Box.

[4] Equip the Black Box and Defeat the Final Boss again.

To view the extended ending scene and conclude the Unknown Signal mode, Hugh and Diana must equip the Black Box Mod and return to the Central Port to defeat the enhanced version of the final boss.