In-game pickup line
“Feel my pain”
Mechanics
What Razor Blade does
- Using it damages Isaac and grants 1.2 damage for the current room.
- The first use in a room costs one heart; later uses in the same room cost half a heart in Repentance, taking red health first.
From the game files
Recharge
The game file specifies zero standard charges. Use conditions can depend on the item or another resource.
Achievement #44
How to unlock it
Defeat Satan as Eve.
In Repentance, Eve can start with Razor Blade after 439 coins are donated to the Greed Donation Machine, even before Satan is defeated as Eve.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Use it only when the increased damage is worth the immediate loss of health.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ. Charge and pickup values shown above also come from the extracted items.xml.
