Achievement

Living on the edge

Beat a whole chapter after the Basement (both floors, start to finish) with only half a heart of health in total.

In-game: “Unlocked a new item.”

Stage 1

Living on the edge
Next up
Beat a whole chapter after the Basement (both floors, start to finish) with only half a heart of health in total.
Beat both floors of any chapter after the Basement with only half a heart of health in total. Playing as The Lost works.
Sources:Achievements