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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

Isaac

Tainted version: Tainted Isaac

Unlocking Isaac

Available from the start.

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)Lost BabyUnlocked a new co-player baby.
IsaacIsaac's TearsUnlocked a new item.
SatanMom's KnifeUnlocked a new item.
???The D20Unlocked a new item.
LambMissing Poster
Mega SatanCry BabyUnlocked a new co-player baby.
Boss RushIsaac's HeadUnlocked a new item.
HushFart BabyUnlocked a new item.
GreedLil' ChestUnlocked a new item.
Greed (Greedier)D1Unlocked a new item.
DeliriumD infinityUnlocked a new item.
MotherMeat CleaverComplete the Corpse with Isaac.
BeastOptions?Complete the final chapter with Isaac.

Unlocked by playing as Isaac

Tainted IsaacOpen the hidden closet in Home as Isaac.
Buddy BabyEarn every completion mark on Hard mode as Isaac.