In-game pickup line
“Buried memories”
Mechanics
What Isaac's Tomb does
- An Old Chest appears at the beginning of every floor and costs a key to open.
- It can contain Soul Hearts, trinkets, or family and Angel-themed items.
Achievement #505
How to unlock it
Defeat The Beast as Tainted Forgotten.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Keep one key for the next floor's chest when resources are tight.
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.
