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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

Monstro's Tooth

Beat Chapter 1 (the Basement).

In-game: “Unlocked a new item.”

Sources:Achievements

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Stage 1

Monstro's Tooth
Next up
Beat Chapter 1 (the Basement).
Beat Chapter 1 (the Basement).
Sources:Achievements