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Isaac Progression

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Unofficial fan project. Not affiliated with the developers of The Binding of Isaac.

Game facts are sourced from the Binding of Isaac Rebirth Wiki (CC BY-SA), and each guide links to its sources. Your progress is saved only in this browser.

Character

The Forgotten

Tainted version: Tainted Forgotten

Unlocking The Forgotten

Achievement “The Forgotten” #390

Dig up The Forgotten with Mom's Shovel in the Dark Room (a three-part process).

Completion marks

0 of 12 marks · 0 on Hard / Greedier. Click a mark to change it.

A Hard win counts as Normal too.

Sources:Completion Marks Hard mode Greed Mode

What the marks unlock

Heart (Hard)MarrowUnlocked a new item.
IsaacSlipped RibUnlocked a new item.
SatanPointy RibUnlocked a new item.
???Jaw BoneUnlocked a new item.
LambBrittle BonesUnlocked a new item.
Mega SatanBound BabyUnlocked a new co-player baby.
Boss RushDivorce PapersUnlocked a new item.
HushHallowed GroundUnlocked a new item.
GreedFinger BoneUnlocked a new item.
Greed (Greedier)Dad's RingUnlocked a new item.
DeliriumBook of the DeadUnlocked a new item.
MotherBone SpursComplete the Corpse with the Forgotten.
BeastSpirit ShacklesComplete the final chapter with the Forgotten.

Unlocked by playing as The Forgotten

Tainted ForgottenOpen the hidden closet in Home as The Forgotten.
Bone BabyEarn every completion mark on Hard mode as The Forgotten.