Run currency rewards
Chthonic Keys from Tartarus doors
Keys unlock weapons and Mirror options, making them valuable early in account progression.
WHERE & HOW TO FARM
Chthonic Keys from Tartarus doors
Chthonic Key chamber rewards during escape attempts, with a possible Gemstones-to-Keys exchange at the Wretched Broker in the House.
Before you go
- Begin an escape attempt and reach chamber choices.
- Know whether you need Keys for a weapon unlock or another account option.
- Have surplus Gemstones if you plan to consider a Broker trade.
Farming steps
- Inspect each chamber reward icon and select a door that specifically shows a Key when Keys are your priority.
- Clear the encounter and collect the displayed Key reward.
- Continue checking later chamber doors; do not assume the same reward appears at each fork.
- After returning to the House, inspect the Wretched Broker’s current offers if you still need Keys.
- Compare the Gemstones cost with planned House Contractor purchases before making an exchange.
- Spend Keys on the account unlock that prompted the farm.
- Blue laurel groups several reward types; use the specific icon rather than the laurel color to identify Keys.
- The Broker trades upward, so the exchange can consume a resource you may need for Contractor jobs.
Repeat, collect and use
Repeatable through later runs, though specific chamber rewards and Broker offers vary.
Common mistakes
- Entering a blue-laurel room expecting a Key; verify the icon first.
- Assuming Charon sells Keys; use chamber rewards or a listed Broker exchange.
- Trading away all Gemstones before checking Contractor priorities; compare uses before exchanging.
When to stop or switch
Stop prioritizing Keys when the planned unlock is complete, then redirect chamber choices toward the next progression resource.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.