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Chthonic Key.png

Chthonic Keys are one of several Artifact currencies that can be found within the Underworld. They allow Zagreus to unlock additional upgrade choices at the Mirror of Night, as well as additional Infernal Arms.

Codex Entry[]

'...Certain artifacts within the realm of Hades have been sealed under lock and key, to prevent tampering by those not yet prepared to harness their immeasurable might. Those keys, or so they appear, are not so easy to procure. But, there are ways. The keys lie strewn within Tartarus, perhaps beyond. They seem as though composed of the shadows themselves, and disintegrate first into dust then nothingness at all when used; perhaps that dust merely reforms into another key, somewhere, some other time.'

Obtaining Chthonic Keys[]

Using Chthonic keys[]

  • You can spend a total of 89 Chthonic Keys on permanent unlocks (65 at the Mirror of Night and 24 for Infernal Arms).
  • Resetting talent and refunding darkness from Mirror of Night requires 1 Chthonic Key for each reset.
  • Chthonic Keys can be used in trades with the Wretched Broker.
  • Several of the ranks from the Resource Director require spending Chthonic Keys to obtain them (100 Keys in total).
  • It costs 200 Chthonic Keys to buy the Chthonic Theme from the House Contractor (once available).


Additional Notes[]