Duality
AchievementAfterbirth+Unlock unknown
Achievement details
- Achievement number
- 306
- Description
- Unlocked a new item.
- Requirement
- Defeat Ultra Greedier as Lilith
How do you unlock Duality?
In The Binding of Isaac, Duality is unlocked by earning the Ultra Greedier completion mark as Lilith (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new item.
See the full unlock path for Duality — 6 stepsWhat unlocking Duality leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13