Some targets are more susceptible to certain types of damage, whereas others are more resilient to specific types. This is reflected using Resistance and Vulnerability.

Resistance will reduce incoming damage of a specific sort. The most common form of Resistance is that granted by armour, which typically grants Resistance against Blunt, Impaling and Slashing damage.

A target that has Resistance to damage, and that takes damage of that type, reduces the damage by one point for every die of damage rolled against it, for each level of Resistance they have to that damage type. This reduction of damage takes place after all of the damage has been totalled, and if it results in zero or less damage, the target takes no damage.

Creatures with a Vulnerability will take additional damage from a specific source. Similar to Resistance, this takes the form of one point of additional damage, per level of Vulnerability, per die of damage rolled.