via GameRant
The Underpass Resonant Quest Walkthrough in Control Resonant
Here’s where to find every key in the Underpass Resonant quest and how to reach the boss in Control Resonant.
The Underpass is a puzzle-adventure simulator that launched in early November 2025 on PC. The indie title tasks players with navigating underground environments while solving environmental puzzles to progress.
Coverage has focused on the game's Resonant quest line, with guides emerging to help players locate keys throughout the Underpass and reach the quest's final boss encounter. The walkthrough content suggests the game features a structured progression system built around discovering items and overcoming environmental challenges.
Trailer
Coverage (1)
via GameRant