Radiolarian Fluid

Radiolarian Fluid is a hazard pool left behind when Vex Goblins are slain under the Shocker Lost Sector modifier. Shocker appears on Master difficulty Lost Sectors such as Bunker E15 and Perdition.

The fluid lingers on the ground after the Goblin dies, so clear or avoid the pools while moving through the room. Some guides describe Arc pools instead of Radiolarian Fluid for the same modifier, so check the current wording in-game if it matters for a run.