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Emma and Koo exploring an industrial wasteland beneath a colossal Malefect in Beast of Reincarnation
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Beast of Reincarnation Cleanse Walker Upgrade Materials

How Cleanse Walker levels gate weapon upgrades in Beast of Reincarnation, where Generator Devices, Electronic Brains and Memory Chips fit, and when to return.

Confirmed game info

The Cleanse Walker is more than a story hub. It is part of Beast of Reincarnation’s equipment progression, and launch coverage reports that weapon and projectile enhancement eventually stops until the Walker itself reaches the required level.

The important practical result is that exploration and upgrades cannot be separated. If an enhancement screen says the base level is too low, farming only Amber or combat experience will not solve that gate. You need the Walker materials Koo discovers across the regions, then you need to return and deposit them.

This guide names only the three materials confirmed by ScreenRant and does not claim complete locations, quantities, respawn rules, or drop rates.

What the Cleanse Walker gates

ScreenRant’s launch starter guide reports that weapon and projectile upgrades are tied to Cleanse Walker growth. You can reach a point where the current equipment cannot be enhanced further until Emma’s home base has levelled up.

The equipment enhancement screen shows the required base level beside the weapon. Use that number as the reliable check instead of assuming a weapon is capped permanently.

A simple diagnosis is:

  1. Open the enhancement screen.
  2. Check the level requirement shown beside the item.
  3. If the Walker is below it, stop spending time looking for a nonexistent weapon-only workaround.
  4. Return to regional exploration and collect the base materials Koo identifies.

For a broader early upgrade order, see the first-hours build and combat guide.

The three confirmed material names

ScreenRant specifically names these rare items:

  • Generator Devices
  • Electronic Brains
  • Memory Chips

The article says they are scattered throughout each area and are used to level the Cleanse Walker. It does not provide a complete map or universal count for every Walker level, so this page does not invent one.

Treat all three names as progression pickups. When Koo points one out, collect it even if the current weapon can still be upgraded. The gate may appear later, and the materials are part of the base’s longer progression rather than a single sword recipe.

Emma and Koo standing on a ledge in an industrial wasteland while a colossal antlered Malefect towers near a communications structure in Beast of Reincarnation
Official regional screenshot. Walker progression materials are reported as exploration finds spread through each area; this image is environmental context, not a claim that a specific item sits at this pictured landmark.

How deposits work

According to ScreenRant, Koo can discover the rare Walker materials for Emma to pick up while exploring. Each time you return to the Cleanse Walker, the collected materials are deposited, eventually raising the base level and allowing further equipment enhancement.

That makes Koo’s discovery behavior part of the progression route. Do not sprint through a region with the sole goal of reaching the next boss if Koo is identifying pickups or side paths. A missed base material can become the reason the enhancement menu blocks the next weapon tier.

The source does not say that every return guarantees a level. Think of the return as depositing progress, not as a fixed one-trip upgrade.

A practical region-sweep routine

This is a conservative route method built from the confirmed systems, not a complete collectible map:

  1. Start from a campsite with supplies restored. Check the equipment requirement before leaving so you know whether Walker level is the current gate.
  2. Take visible side paths and vertical routes. Lift and Extend can expose paths that a straight ground route misses; the Lift and Extend traversal guide covers those tools.
  3. Respond to Koo’s discoveries. ScreenRant specifically attributes locating the rare materials to Koo.
  4. Collect before entering an obvious boss arena. Kotaku advises finding the nearby campsite before most boss fights; use that pause to finish the local sweep.
  5. Return to the Walker and deposit. Do this before assuming the enhancement gate is unchanged.
  6. Re-open the equipment enhancement screen. Compare the displayed base requirement with the Walker’s new level.

This order avoids two common wastes: grinding combat currency when the base level is the real block, and leaving a region before collecting the progression objects the companion is already highlighting.

Emma and Koo standing in a shallow river beneath overgrown ruins in Beast of Reincarnation
Official exploration screenshot. The useful habit is to inspect side routes and respond to Koo before leaving a region, not to infer an item location from promotional scenery.

What to do at the Walker before leaving again

Kotaku’s launch tips describe several reasons to return to the Walker even when the next story route is open:

  • Restock supplies.
  • Check crops that are growing.
  • Let Koo and Kagura complete research that produces more items.
  • View new character moments when companions have something to discuss.

Kotaku also notes that the campsite menu’s bottom-right area indicates when companions have new dialogue. That turns a material-deposit trip into a general reset point: deposit progression, restock, check research and crops, then leave with the next enhancement target in mind.

The official Steam page describes customizable skill trees, gear, and spirit stones, but it does not publish the Walker material counts. Keep the distinction clear between official high-level progression and the specific observations above, which come from Kotaku’s launch-week play rather than from this site.

Upgrade priority without invented values

When several upgrades are available, use observable requirements:

  1. Fix movement or survival problems first. The early Tracking Shot dodge roll and healing tools can change whether Emma survives long enough to use a stronger weapon.
  2. Check the current weapon’s displayed Walker requirement. This is a real gate shown by the game.
  3. Upgrade what supports the build you are using now. The official store confirms ranged, stealthy, and aggressive loadout directions, but does not declare one universal best route.
  4. Keep collecting all three Walker materials. Do not ignore one material name based on an unsourced claim that only another matters later.

For the confirmed build systems without a fabricated tier list, use the progression, skills and gear guide. For parry and Koo fundamentals, start with the launch-day beginner guide.

What this guide does not claim

We have not verified a complete map, the number required for each Walker level, whether pickups respawn, any drop rate, a region-by-region total, or the maximum base level. The material names, discovery/deposit loop, and equipment gate were checked against launch coverage on 2026-08-06.

Sources

Need confirmed facts instead?

For release date, combat pillars, pricing, and PC specs, start with the official game info page. Editorial rules are on the disclaimer.

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