Toxic Sewers

"A greenish substance oozed its way into a number of pipes along here... and it continues to spread."

The Toxic Sewers are a second level biome. They appear as sewers with ponds of green, poisonous water and rusty pipes that the player can climb and stand upon.

The sewer system beneath the prisons, with pipes that carry a sickly green sludge.

A Slasher elite can be found here who drops the Teleportation rune. He disappears after being defeated once.

Access
A Vine rune is required to access this Biome through Prisoners' Quarters.