In-game pickup line
“A brittle blessing”
Mechanics
What Hollow Heart does
- Descending to a new floor grants a Bone Heart container.
- It starts empty, so red-heart healing is needed to fill it for protection.
Achievement #577
How to unlock it
Defeat Mother as Tainted Forgotten.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Carry it across floors and save red healing for the new Bone Heart.
Reference
Game data and sources
The trinket ID, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
