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If you are in Chapter 5’s dark chamber with colored lenses and mirrors, clear the dust with the blue beam first, then route each color to its matching switch on the central object. If a shared lens blocks the blue beam, reroute red while keeping its switch lit. Once all three switches glow, use the pedestal that appears.
Make sure you are at the right Chapter 5 trial
“Last symbol” can refer to different trials because Chapter 5’s four trials can be completed in different orders. The colored-lens solution below is for the underground room with light projectors, mirrors, and a central object. If instead you see spike tiles marked with symbols, use the sequence Dots → Squid → Dots → Flower → Squid reported in the AllThings.How spike-trial guide.
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Reach the colored-lens chamber
- Follow the tree-lined hallway to the locked metal door.
- Turn back, climb the ladder, and crawl through the opening in the rock.
- Activate the light pillar on the upper ledge, then descend into the chamber.
This route is described in the NerdsChalk Chapter 5 walkthrough.
Clear the lenses and route all three beams
1. Sweep away the dust
Use the blue projector to sweep the room and clear dust from lenses and mirrors. If dust remains along a path you need, use the red lens to clear it as well. Do this before trying to finalize the beam routes: an obscured lens or mirror can prevent a beam from reaching its target.
#1 Best Overall
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2. Light the green switch
Use the green lens and the mirrors to direct green light to the green-outlined switch on the central object.
3. Light the red switch
Adjust the mirrors so the red beam reaches the red-outlined switch.
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4. Free a route for blue
Send blue light to the blue-outlined switch. The lenses are shared, so a lens currently used by the red route may obstruct blue. If that happens, move red onto another valid mirror route that still keeps the red switch lit, then direct blue through the freed lens. The walkthroughs describe the target colors and the need to rearrange a shared route, rather than giving a single fixed mirror-by-mirror arrangement.
Claim the symbol
When the green, red, and blue switches are all lit, the central object lowers. Jump to it and interact with the pedestal to receive the symbol, as shown in the Into Indie Games Chapter 5 walkthrough.
Rank #3
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Game context
Focus Entertainment’s official game page describes Resonance: A Plague Tale Legacy as an action-adventure game developed by Asobo Studio and published by Focus Entertainment Publishing. It lists PC, PS5, Xbox Game Pass, and XS, and gives August 27, 2026 as the release date.
Quick Recap
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