Purge is a challenge in Isaac's Limbus, a mod for The Binding of Isaac.
This challenge is played on Hard mode.

Nail and Hammer

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

Isaac's health is reduced to half a heart every floor.
Heart pickups don't spawn.

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 Purge challenge: Nail and Hammer

• Download Isaac's Limbus from the Steam Workshop.