[FF] Isaac Rebuilt is a challenge in Fiend Folio, a mod for The Binding of Isaac.

The Belt
Birthright
4.5 Volt
Sanguine Hook

Note: this list does not include characters' default starting items.

Killing enemies with Sanguine Hook makes them drop Half Hearts which disappear after a short while.

Based on the rules set in the .xml file, the following special rooms are disabled during this challenge:

The following is unlocked for completing the [FF] Isaac Rebuilt challenge: Deimos

• Check out the challenge description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.