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Worm Friend

ItemRepentanceLocked

familiarGame ID 682★★★★

How do you unlock Worm Friend?

In The Binding of Isaac, Worm Friend is unlocked by earning the The Beast completion mark as Apollyon (Character).

Structured pathSource-backed requirements are mapped into trackable steps.

Gives Isaac a Nerve Ending familiar that burrows out of the ground to grab and deal damage to enemies over time.

See the full unlock path for Worm Friend — 5 steps

Worm Friend (Achievement)
- Apollyon (Character) → The Beast (normal)
  1. A Strange Door is unlocked by beating Mother for the first time. source
  2. Take The Polaroid or The Negative after Mom, escape the boss room, then use it to open A Strange Door. source
  3. Find Dad's Note, complete the Ascent to Home, then defeat Dogma, the Ultra Harbingers, and The Beast. source
  - Apollyon (Character)

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What unlocking Worm Friend leads to

Nothing depends on this yet.

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13