Glass Cannon
ItemAfterbirthUnlocked
activeGame ID 352★★★★
How do you unlock Glass Cannon?
Verified starting unlockSource data confirms that no unlock is required.
[Before Repentance] Fires a high-damage piercing spectral tear, but lowers Isaac's health to half a heart. / [Repentance] Fires a high-damage piercing spectral tear. If Isaac takes damage while holding this, he takes extra damage and it becomes Broken Glass Cannon.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Glass Cannon leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13