In-game pickup line
“Dead friend”
Mechanics
What Isaac's Head does
- Isaac's Head follows Isaac and shoots tears alongside him.
- Its tears can pass through enemies and strike another target behind them.
Achievement #70
How to unlock it
Complete Boss Rush as Isaac.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Line up enemies to get more from the familiar's piercing shots.
Reference
Game data and sources
The trinket ID, 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.
