Freezing Path · Ferryman’s reward orb

First collect Ferryman's Obol from the chest in Mammon's Lair. With the silver coin, return to the Ferryman's landing in the Catacombs of Paris and wait for him to arrive. If you have just teleported here, let the arrival dialogue finish first. Then speak to the Ferryman, advance the dialogue, and absorb the reward orb to obtain Freezing Path. This reward can only be claimed once per save.