Chapter 3: Those Before Us walkthrough

The critical path

Reach the island ruins, move between present and past, and learn how reflector chains open sealed doors.

Follow these Chapter 3 checkpoints in order; each one marks a progression action or a search window before the next one-way transition.

• Search both sides of the opening beach before climbing into the ruins; the turtle and first island relics sit off the direct route.
• Use the hilltop grapnel point, descend into the ruins and inspect lower floors before following Leni uphill.
• At the watchtower, align the circular viewer with the masts below, then meet Leni at the revealed trapdoor.
• Follow the tunnels and cliff path until the timeline shift introduces the older ruins.
• For reflector rooms, trace the beam from its source through one mirror at a time instead of rotating every device together.

Chapter checklist

Before the final one-way transition, check the chapter tracker for 0 Blades, 6 Artefacts and 4 Charms.

Treat every new receptacle as a source-to-mirror-to-target path; solve one beam at a time.

If the puzzle stops you

Chapter 3 uses the sphere, environmental markings or light routing at the blockers noted above. Reveal the full mechanism first, then change one pedestal, reflector or beam at a time so the failed link remains visible.

The dedicated puzzle guide places Chapter 3's verified solution in chronological order and preserves the surrounding objective name, making it easier to confirm that you are solving the same room.