09 Chapter nine · Ingredients and inference
The Soulstone
Near the end of the expedition, the puzzles ask the team to combine descriptions, materials, and imagination. Good organization beats fast guessing here.
EXPEDITION FOCUSMaterial lists, clue interpretation, and elimination.
FULL Chapter walkthrough
Complete puzzle guide
The explorers have almost enough soul fragments. In separate rooms, they must reconcile two sets of material notes and use the machines to synthesize the missing fragment.
01
How to use the three machines
Create one shared list of every material code and every known combine or split result. The two rooms describe the same substances from different perspectives, so agree on a code before operating either machine.
- The left machine splits one component into two.
- The right machine combines two components into one.
- The central/final machine accepts the three finished components required by the Soulstone table.
02
Synthesize the soul fragment
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Exact material sequence
- Combine FB and PJ to create OT.
- Combine OT and PA to create OH.
- Reserve three units of DL.
- Split one DL into PO and FA.
- Split another DL so you have two PO in total.
- Split one PO into OX and PL. PL is the erased entry on the recipe sheet.
- Combine PL and the remaining DL to create OL.
- Combine PE and FR to create PB.
- Combine PB and OX to create AM.
- Combine AM and the remaining PO to create PF.
- Place OH, OL, and PF into the final device to create the Soulstone.
- Carry the Soulstone downstairs and place it in the machine with the two stones already collected. The machine creates the red stone and starts the next cutscene.