Players exploring the island in A Plague Tale: Resonance will encounter a puzzle involving platform latches that requires manipulating light beams to progress. This challenge, found in Chapter 3, involves unlocking three latches by directing light onto specific points, which also reveals unsettling frescoes.
Unlocking the First Latch
To begin, stand on the central platform facing the orb receptacle. The first latch is located on the wall opposite this position. Turn away from the receptacle to find a large lens on a nearby platform. Interacting with this lens and aiming it at the latch circle on the wall will illuminate the first fresco, depicting a beast on its own, and unlock the first latch. Once a latch is unlocked, the lens remains in position for subsequent steps.
Unlocking the Second Latch
With the orb receptacle still in front of you, look to the left to find the second latch circle. Return to the lens used for the first latch. This time, adjust the lens so the beam of light directs towards the left. A second lens will become visible on another platform, which the initial beam must strike. Once the beam hits this secondary lens, move to it and aim its light at the latch circle to charge it. Successfully charging this circle will reveal a fresco of a beast destroying a city and unlock the second latch.
Unlocking the Third Latch
The final latch requires repairing a broken lens. Locate the broken lens on a platform to the right of the fresco depicting a Minotaur. Use Leni to lift the broken lens into place when prompted. Then, return to the lens situated to the right of the fresco showing the Minotaur destroying a city. Aim this lens at the repaired, broken one that Leni is holding. This action will activate the third and final latch, completing the puzzle.