How To Find A Way Inside The Mountain In Resonance A Plague Tale Legacy (Chapter 10)

TL;DR – Quick Summary

• Finding a way inside the mountain is the main objective of Sub-Chapter 2 – In the Plunderers’ Wake in Chapter 10 of Resonance A Plague Tale Legacy.
• The route starts by following a flag in shallow water → three white dots → rope on the ground to a hidden cave.
• Inside the cave, four wall symbols guide your direction: follow them as Right → Right → Right → Right → Left → Left to reach the camp and the mountain exit.
• The large open area requires a four-mirror chain puzzle (starting from the waterfall cave) to route light to the fresco door.
• After the mirror chain, reveal a hidden blue icon using the sphere while Faro shines his beam. Then read the stelae symbols to position the door’s three coloured gems correctly.
• Before solving the door puzzle, take the detour to collect the Xiphos blade (smash all vases first) and the Theseus Echo #5 from Daedalus’ Workshop.
• None of the collectibles here are missable — all can be retrieved via Chapter Select.

Finding a way inside the mountain in Resonance A Plague Tale Legacy is the central challenge of Chapter 10’s second sub-chapter. After Sophia and Faro arrive in the large open jungle-and-ruin area together, the path forward is completely sealed and the mountain offers no obvious entrance. What follows is one of the most layered puzzle sequences in the game — a cave navigation section guided by wall symbols, a four-mirror light chain stretched across an open area, a hidden blue icon that requires Faro’s co-operation to reveal, and a fresco-based door puzzle that unlocks the mountain entrance. This guide covers every step in order, including all the collectibles along the way. If you need the Xiphos blade (the last blade in the game and the one that unlocks the Plunderer trophy), it’s in this exact area — the all blade locations guide covers its puzzle solution in full, and this walkthrough shows exactly when to detour for it.

Where This Section Starts – Context

Sub-Chapter 2 of Chapter 10 begins after the intense story beat at the end of Sub-Chapter 1 — the bridge collapse and the reveal of a major betrayal. Sophia and Faro emerge into a large open area together. The mountain is visible in the distance. There is no obvious entrance. A slope leads down into shallow water ahead. This is where “Find a way inside the mountain” becomes the active objective.

Open Sophia’s notebook before moving. It contains several clues about the area — symbols and drawings that foreshadow the cave navigation and the fresco puzzle ahead. You won’t need to decipher them yourself, but having them fresh in your mind makes the area feel coherent rather than random.

Step 1 – Follow the Flag and the Three White Dots

Head down the slope from where Sub-Chapter 2 begins and walk into the shallow water ahead. In the middle of the water, you’ll spot a flag standing upright. Approach it. This is a waypoint, not an interactive object — it’s simply pointing you in a direction.

From the flag, turn right. In the distance you’ll see three white dots — a cluster of white paint marks on rocks or a visible marker. Head toward them. Once you reach the area near the three white dots, look on the ground — there is a rope lying on the ground. Follow the rope. It leads you along a specific path through the terrain toward a hidden cave entrance.

The rope terminates at a concealed cave with a ladder inside. This is not obviously visible from a distance — it’s tucked into the cliff face. Climb down the ladder to enter the underground section.

Step 2 – Navigating the Cave Using Wall Symbols

Inside the cave, the path branches multiple times. The game gives you a navigation tool: symbols painted on the cave walls at each junction. Four symbols appear in total and each one tells you which direction to turn at that fork.

The symbol meanings in this cave are consistent:

• Circle symbol = turn right
• Other symbols at subsequent junctions also indicate right turns
• The last two junctions indicate left turns

The complete path through the cave from top to bottom is:

• Junction 1: Turn right (circle symbol)
• Junction 2: Turn right
• Junction 3: Turn right
• Junction 4: Turn right
• Junction 5: Turn left
• Junction 6: Turn left — this exits at the camp

Follow the symbols precisely rather than trying to navigate by instinct. The cave loops and dead-ends in ways that feel disorienting — the symbols are the game’s intended guide. If you miss one and get turned around, backtrack to the last junction you recognised and re-read the wall. The exit drops you into a camp area at the base of the mountain.

Step 3 – The Camp and Approach to the Open Area

Exiting the cave brings you into a camp at the mountain’s base. Move through the camp and continue forward into the large open area beyond it. This is the main outdoor space where the mountain entrance puzzle takes place. It’s a sprawling zone with a waterfall on the left side, frescos on a large wall ahead, and several mirrors visible at different heights around the terrain.

Before starting the mirror chain puzzle, take the time to collect the items in this area. Nothing is permanently missable via Chapter Select, but it’s more efficient to grab them all now rather than backtracking.

Collectible – Terra Incognita Artefact (Relic of the Present)

As you enter the open area and move forward from the camp, look straight ahead and slightly right. Near some pots on the ground, you’ll find the Terra Incognita artefact on the floor. Pick it up before doing anything else in the area.

Collectible – Thakourth Ball Artefact (Relic of the Present)

From Terra Incognita, go as far right as you can toward the water. Near a pot at the rightmost edge of the open area, the Thakourth Ball artefact is on the ground. Grab it before crossing back left.

Collectible – Beads Charm

Head into the trees in the middle of the open area. Somewhere in a clearing within the trees, you’ll find a chest containing a Beads charm. Explore the tree area before moving to the puzzle — this chest blends into the environment and is easy to walk past.

Optional Detour – Xiphos Blade (Heroes’ Grave)

The Xiphos blade — the final blade in the game and the one that completes the Plunderer trophy — is also in this area. To find it, continue to the far end of the space beside the high water. Turn left to find a cave opening. Go through it and use the Grapnel to climb up at the end. At the top you’ll find the bull pillar. Before starting the puzzle, smash all vases in the area — one of them is hiding the blue gem needed for the alignment. Once all vases are broken, stand on the lit platform in the right corner and align: Red = left gem, Green = middle gem, Blue = right gem (the one under the vase). The crypt opens and the Xiphos is inside. Full details are in the blade locations guide.

Step 4 – The Four-Mirror Chain Puzzle

With collectibles gathered, it’s time to route light to the fresco door. The open area has a large puzzle door covered in weapon frescos on one wall. Light needs to reach it through a chain of four mirrors positioned across the area. Here is every step of the chain in order.

Mirror 1 – Waterfall Cave (Starting Point)

Go to the left side of the open area and find the hidden cave behind the waterfall. Enter it. Inside, there is a light source and a reflector (large mirror on a mechanism). There is also a central wheel mechanism on the main mirror inside the cave — interact with the central wheel and rotate the left stick clockwise to switch the light on. This is important — the smaller side wheels only aim the mirror. The central wheel is what activates it.

Once the light is on, rotate the reflector so the beam shoots out of the left entry of the cave and onto the mirror just outside — the first mirror in the chain.

There is also a statue near this first outside mirror. Use the sphere near it to note down the symbol carved there — Sophia automatically records it in her notebook. This is one of six symbols needed for the fresco door puzzle later.

Mirror 2 – Platform Mirror

From the first outside mirror, angle it upward and to the right — there is a mirror up on a platform above. Route the beam from Mirror 1 upward to Mirror 2 on the platform.

Head toward that elevated platform. As you get close, Sophia automatically notes a second symbol from the visual information visible near the platform. Add it to the mental list of symbols for the door puzzle.

Mirror 3 – Scaffold or Side Mirror

Grab the reflector near the platform area and aim it at the mirror across the puzzle area — on the far side of the open space. This routes the beam from Mirror 2 through Mirror 3 toward the centre of the area.

As you jump down from the platform to position Mirror 3, enemies appear. Defeat all of them before continuing. Once the fight is clear, return to the platform and help Faro up onto it.

Mirror 4 – Faro’s Position

With Faro now on the platform, he takes control of the mirror there and holds his beam steady — directing it toward the corner to the right of the fresco puzzle door. He will hold this position while Sophia continues. Now go to the fresco door area on your own.

Step 5 – Revealing the Hidden Blue Icon with Faro’s Help

In front of the fresco puzzle door, there is a floor plate. Stand on it. Faro’s beam, directed from his position on the platform, shines directly at you. Now use the sphere — point it at the round green metal piece on the fresco door. This is a small circular metal element that is easy to miss visually. When the sphere focuses on it, a hidden blue icon reveals itself. Sophia automatically scribbles it in her notebook. This is a key piece of the door puzzle — without it, the solution cannot be completed.

Step 6 – Reading the Stelae Symbols

Before solving the fresco door itself, walk to the stelae — carved stone tablets — positioned in the lit area near the three pedestals in front of the door. Activate the sphere’s Light Reveal mode (hold R1/RB) while standing near the stelae. Six symbols will appear across the tablets.

These six symbols are a complete reference for how to position the three coloured gems on the door. Each symbol corresponds to one of the weapons pictured in the fresco — and the symbols tell you which weapons belong together as pairs. This is the matching system the door uses.

The second statue with another symbol is close by the puzzle door area. Turn around from the stelae and walk forward to find it — use the sphere to note the symbol there too. While facing the puzzle door, also check the right side for a hidden area where the last statue is positioned. Faro shines his beam toward you there for the sphere to work and reveal its symbol.

Step 7 – Solving the Fresco Door Puzzle

With all six symbols recorded — two from cave statues, two from mirror positions, one from the hidden blue icon, and one from the stelae — you now use the three pedestals in front of the fresco door to position the coloured gems.

Each pedestal controls the position of either the red, green, or blue gem on the door’s surface. The stelae symbols show you exactly where each gem must be positioned — match the symbol on each gem placement to the corresponding weapon symbol shown on the stelae tablets.

How to use the pedestals: Interact with each pedestal to cycle through positions. The pedestals move the gems along tracks on the door’s face. Use the stelae as your reference — position each gem so it sits at the location indicated by its matching symbol on the tablets. There are multiple gem slots on the door and the coloured gems need to fill the correct ones.

Once all three gems are correctly positioned, stand in the lit area at the door and use Light Splitting mode (R1/RB + D-pad). Aim the three coloured beams at the gems in their new positions. All three beams hitting their matching gems simultaneously opens the door. A group of soldiers attacks the moment the door begins to open — defeat them, then squeeze through the crack in the now-open door.

Step 8 – Through the Door and into the Mountain

Through the fresco door, enter the cave on the other side. Follow it forward — after exiting the cave, use the Grapnel to climb up a wall. Continue through this new indoor area.

Daedalus’ Workshop and Theseus Echo #5

Progress through the door at the end of the passage to enter Daedalus’ Workshop — a large interior space filled with ancient mechanisms and blueprints. Before doing anything story-critical here, collect the final Theseus Echo.

Walk forward to the far side of the workshop and find the glimmering Resonance Point on the floor. Pick it up. From that Resonance Point, turn right. You’ll see a mirror hanging from chains on the wall. Jump onto the mirror. While standing on it, look at the wall — there is a Grapnel point (L2/LT prompt visible on screen). Pull it. This drops a weight, which opens a tomb on the upper level of the workshop. Return upstairs and head downstairs into the now-open tomb. Inside is the Axe Chalice for Theseus Echo #5 (Pierced Coin #5). Interact with it.

Do this before interacting with the large mirror on the upper floor for story progress — once you trigger that mirror interaction, the sub-chapter advances and you’ll miss the window to do this cleanly in sequence.

Impossible Mechanism Artefact

Also in Daedalus’ Workshop: go downstairs from the workshop’s main level and cross the bridge on the right side. In the right corner at the end of the bridge, you’ll find the Impossible Mechanism artefact (Relic of the Past). This is one of the most lore-significant relics in the game — an object that should not exist given the era, hinting at Daedalus’s impossible engineering.

Continuing Story Progress – Mirror and the Test Trials

Once you’ve collected the Theseus Echo and the artefact, interact with the large mirror on the upper floor of the workshop for story progress. This interaction unlocks the sphere’s next ability — the Light Concentrate (the laser beam), which is the sphere’s most powerful active mode and becomes central to fighting Puppets and burning the creature in subsequent chapters.

After the mirror interaction, Sub-Chapter 3 (Daedalus’ Workshop) transitions into the Test Trials — the remaining content of Chapter 10. The mountain entrance has now been found and accessed. The objective “Find a way inside the mountain” is complete.

Chapter 10 Sub-Chapter 2 – Collectibles Summary

• Terra Incognita (Relic of the Present): On the floor straight ahead and right as you enter the open area near some pots. Grab immediately on arrival.
• Thakourth Ball (Relic of the Present): Far right edge of the open area near water. Go as far right as possible.
• Beads Charm: Inside the tree clearing in the middle of the open area. Chest in a small clearing among the trees.
• Xiphos Blade (Heroes’ Grave): Far end of the area beside high water. Left cave entrance. Grapnel up. Smash all vases first. Red/Green/Blue = Left/Middle/Right (right gem was under vase). Opens Plunderer trophy.
• Impossible Mechanism (Relic of the Past): Daedalus’ Workshop. Downstairs, cross bridge on the right, right corner.
• Theseus Echo #5 (Pierced Coin #5): Daedalus’ Workshop. Get Resonance Point on far side, turn right, jump on chain mirror, Grapnel wall point, weight drops, tomb opens upstairs. Do this before the story mirror interaction.
• Sun Dial Artefact (Relic of the Past): Found in Sub-Chapter 1 before this section — to the right of the ladder, gap in rocks. Included here as a reminder if missed.

For every collectible across all of Chapter 10 including Resonance Points, our all chapters and collectibles guide has the full breakdown. For the full context of how the dual-timeline system used in Chapter 10’s Daedalus sections works — including how what Sophia discovers here connects to the ancient Minoan past — the timeline switching guide explains the mechanic in full. You can also read more about the historical basis for Daedalus and the Minoan setting in the historical settings guide. The game is available on PC via Steam, PlayStation 5, and Xbox Series X|S. More at the official Focus Entertainment site.

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