Achilles' Rock is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Every enemy receives a random weak spot that, if shot, will make them receive +1 damage.

The weak spot is indicated by 1 of the 4 cardinal directions that the enemy needs to be shot from. For example, enemies can receive +1 damage if shot on the right side of their body.

The following special synergies and interactions for Achilles' Rock have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.