The Four Reflector Puzzle in Resonance: A Plague Tale Legacy can look confusing at first because the room starts completely dark, and several hanging slabs block the direct path to the door. However, the solution is pretty straightforward once you understand the order in which you need to position the four reflectors. Here is a step-by-step guide to solve the Four Reflector Puzzle in Resonance: A Plague Tale Legacy.
Step 1 - Turn On the Sunlight
When you first enter the room, you'll notice the four reflectors but no sunlight coming in. You need to activate the light before you can start solving the puzzle.
- Head toward the right side of the room and turn around to find a set of stairs.
- Climb the stairs to reach the platform above.
- Look for the rectangular stone slab on the platform. This acts as a button.
- Stand on the stone slab to activate the sunlight and illuminate the room.
- Stay on the slab for a moment. Once you step away, the sunlight will disappear.
- Leni will eventually stand on the slab so you can leave the platform and work on the reflectors.
Tip: Don't worry about keeping Sophia on the button. Once Leni takes over, the sunlight will remain active while you move around the room.
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Step 2 - Four Reflector Puzzle Solution
The four reflectors are arranged around the room, and you need to create a continuous path for the sunlight.
The solution follows this order:
Reflector 1 > Reflector 2 > Reflector 3 > Reflector 4 > Door Receiver

The hanging slabs make a direct route impossible, so you need to bounce the sunlight between all four reflectors.
How to Position the Four Reflectors
- Turn Reflector 1 so that the incoming sunlight bounces toward Reflector 2.
- Turn Reflector 2 so its reflected beam travels toward Reflector 3.
- Turn Reflector 3 so that the sunlight bounces toward Reflector 4.
- Turn Reflector 4 so the final beam hits the sunlight receiver on the door.
- Check the beam's path and make sure the sunlight reaches the receiver without getting blocked by one of the hanging slabs.
- Once the sunlight hits the receiver, the door opens.
Quick Solution: If you're just looking for the route, remember 1 > 2 > 3 > 4 > Door. The main trick is rotating each reflector until the beam reaches the next one in that sequence.
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Step 3 - Open the Door
Once Reflector 4 sends the sunlight into the door's receiver, the mechanism activates, and the door opens.
You can then leave the reflector room and continue deeper into the temple.
The puzzle looks more complicated than it actually is. Once Leni keeps the sunlight active, just follow the 1 > 2 > 3 > 4 > Door sequence and adjust each reflector until the beam connects the entire path.