In-game pickup line
“Unfinished business”
Mechanics
What Spirit Shackles does
- Lethal damage turns Isaac into a ghost with half a heart, still able to fight near his body.
- Surviving ten seconds revives him; the protection must be recharged by collecting a Soul Heart.
Achievement #469
How to unlock it
Defeat The Beast as The Forgotten.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
During the ghost window, prioritize dodging until the revival completes.
Reference
Game data and sources
The item ID, quality and pool listings, 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.
