Where do you buy dungeon keys?

Keys bought in advance must sit in your backpack or inventory before the run begins. Carrying them into the match lets you open locked rooms and gated areas holding rare loot boxes and eggs. On hard difficulty, certain gates and doors require silver keys specifically.

For purchases during an infiltration, check near transit points. A mysterious vendor can appear inside Egg Heist dungeons near an entrance or exit. Traders also stock keys at the side entrance and right beside the large portal.

Not settled: Key purchasing locations remain inconsistent across game sessions. The system currently wavers between requiring keys to be bought before entering a match and offering them directly from NPC traders stationed inside near portals and side doors.