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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.

Achievement

Mom's Lock

Defeat Isaac, ???, Satan and The Lamb as Tainted Isaac.

Sources:Achievements Cathedral Chest (Floor)Sheol Dark Room

0 of 8 doneNext: The Womb

x

Stage 1

The Womb
Next up
Defeat Mom.
Reach Depths II and defeat Mom.
Sources:Achievements Womb

Stage 2any order

Blue Womb
Later
Defeat Mom's Heart 10 times.
After: The Womb
Mom's Heart defeats0 / 10
The Negative
Later
Defeat Satan 5 times.
After: The Womb
Satan defeats0 / 5
The Polaroid
Later
Defeat Isaac 5 times.
After: The Womb
Isaac defeats0 / 5

Stage 3

A Secret Exit
Later
Defeat Hush 3 times.
After: The Womb, Blue Womb
Hush defeats0 / 3

Stage 4

A Strange Door
Later
Defeat Mother.
After: A Secret Exit

Stage 5

The Broken
Later
Open the hidden closet in Home as Isaac.
After: The Polaroid, A Strange Door

Stage 6

Mom's Lock
Later
Defeat Isaac, ???, Satan and The Lamb as Tainted Isaac.
After: The Broken, The Womb, The Polaroid, The Negative