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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

???'s Only Friend

Complete the Boss Rush as ???.

In-game: “Unlocked a new item.”

Sources:Achievements Boss Rush

0 of 3 doneNext: The Womb

x

Stage 1

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

Stage 2

???
Later
Defeat Mom's Heart 10 times.
After: The Womb
Mom's Heart defeats0 / 10

Stage 3

???'s Only Friend
Later
Complete the Boss Rush as ???.
After: ???