How to get and use Stardust Resonant Filter in Once Human

The Stardust Resonant Filter in Once Human is a structure that allows you to farm the Starchrom currency by purifying certain materials, such as Cortex. Purifying these items initiates a tower defense-style mini-game where your base will be attacked by hordes of enemies. Successfully defeating them will drop the Starchrom currency.

This guide covers everything know about Stardust Resonant Filter in Once Human, including how to craft it and purify materials to farm Starchrom.

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How to craft Stardust Resonant Filter in Once Human

Stardust Resonant Filter is a craftable structure in Once Human (Image via Starry Studio)

You can craft the Stardust Resonant Filter by following these steps:

• Open the Building catalog by pressing 'B' on the keyboard.
• Navigate to the Facilities section on the top by pressing 'Q' or 'E.'
• Select the Stardust Resonant Filter in the Functional tab.

Here are the items required to craft the Stardust Resonant Filter:

• 20x Glass: Crafted in a Furnace.
• 30x Metal Scraps: Acquired by disassembling items.
• 20x Rubber: Acquired by disassembling items.
• 10x Copper Ingot: Crafted in a Furnace.
• 10x Acid: Looted around the map.

Place the Stardust Resonant Filter in a well-fortified area, as it will be attacked by hordes of enemies after you use it.

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How to use Stardust Resonant Filter in Once Human

You can purify Cortex in the Stardust Resonant Filter (Image via Starry Studio)

To use the Stardust Resonant Filter in Once Human, you will need purifiable items like Cortex. This material comes in varying levels and is rewarded for the first-time completion of a Dungeon, as well as for completing Public Crisis Events and Warband activities.

The level of the Cortex material determines the enemy levels, the waves of enemies and Elites you must defeat, and the amount of Starchrom currency you will receive as a reward. All these details will be displayed above the Purifying Vessel menu in the Stardust Resonant Filter.

To use the Stardust Resonant Filter in Once Human, place any level of Cortex material in the Purifying Vessel and select Purify. This will start the tower-defense mini-game, and you will be attacked by hoards of enemies.

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What is Starchrom in Once Human?

Starchrom is a currency in Once Human that is used at the Wish machine to unlock Gold rarity Weapons and Armor Blueprints.

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More on Once Human:

• Can you play Once Human on Steam Deck
• Can you play Once Human on Android and IOS