In-game pickup line
“Tome of knowledge”
Mechanics
What Book of Secrets does
- Each use supplies a Treasure Map, Compass or Blue Map effect that is not already active for that floor.
- It also highlights special rocks in the room; after all three map effects, another use can grant X-Ray Vision.
From the game files
Recharge
Standard recharge6 room clears
Standard room-clear recharge. Batteries and other effects can change how quickly it refills.
Achievement #122
How to unlock it
Defeat Satan as Eden.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Use it early on a floor so the temporary map information helps with the full route.
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. Charge and pickup values shown above also come from the extracted items.xml.
