Foundry
A furnace the size of a chapel. Vents flare, lava runs in channels, embers drift in the air.
Boss
Floor 4. About 15–17 rooms.
Water slows you to 90% of your speed here.
Furnace GolemAlembric, the Bottled DoctorVarrow, the Hour-WardenThe Cog WidowBrannoch, the Hollow JourneymanScoria, the Dross GiantTraps and hazards
- Fire vents: A vent smokes and glows for about 2 seconds, then bursts into flame for under a second, every 3.4 seconds. The flame costs you half a heart and also burns monsters. Cross it while it is dark, or dash.
- Lava: Standing in lava costs half a heart every second and slows you down. A dash across it is safe.
Special room layouts
Lava river, Forge.