In-game pickup line
“Your feet feel stronger”
Mechanics
What Callus does
- Isaac can cross ordinary spike tiles without taking their damage.
- Damaging creep on the floor also becomes harmless.
In a run
Practical note
Use the safe floor space to collect pickups or navigate rooms, while still avoiding enemies and projectiles.
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.
