Enter Solutional Haunt
Activate an Access Node in the normal third environment group and finish the teleporter event to open the Encrypted Portal. In Conduit Canyon, collect Sentry Keys, supply the required terminals, and complete the teleporter event with Alloy Hunter.
Continue to Solutional Haunt. Activate both Heat Vents and defeat Solus Wing. The left cave opens, giving access to the Solus Coffers.
Find the two Matrices
| Coffer | Position cue |
|---|---|
| First | Beneath the central tower |
| Second | On the distant high platform |
Collect one Prison Matrix from each. If Umbra MUL-T blocks your return from the distant platform, deal with it before heading back.
Return to the right cave by the entrance. Spend one Matrix on the vault door and the second on Drifter’s cage. The two hand-ins consume the items and complete Lost in Transit. Then follow the normal exit route.
Choose the use before spending one
Wandering CHEF can combine a Prison Matrix with Encrypted Cerebellum to make Exposed Cerebellum. Spending one before rescuing Drifter leaves you short of the two needed hand-ins.
The item’s armor description is +50% base armor, with no stacking. That is not the same as 50% damage reduction. If base armor is zero, increasing that base by 50% does not create additional armor.