Damage
If your attack hits, you deal damage. Damage first reduces a target’s current Stamina Points and then the target’s Hit Points (see Injury and Death on page 250 for more information). In most cases, the type of weapon used determines the amount of damage you deal, though specialization in groups of similar weapons (see the Weapon Specialization feat on page 163) and other abilities can increase that amount. Some weapons and abilities may add further effects in addition to dealing damage.
Source
Core Rulebook pg. 240
When you hit with a melee or thrown ranged weapon, add your Strength modifier to your damage roll’s result. However, do not add your Strength modifier to the damage of your grenades and nonthrown ranged attacks. Source Core Rulebook pg. 240 |
Sometimes you multiply your damage by some factor, such as on a critical hit (see page 245). In this case, you do not literally multiply your damage roll result by that factor. Instead, you roll the damage (adding all modifiers) the number of times specified and total the results. If you multiply damage more than once, each multiplier applies to the original, unmultiplied damage. Thus, doubling damage twice is equivalent to rolling the damage (adding all modifiers) three times—once for the original damage and once for each doubling. Source Core Rulebook pg. 241 |
If penalties reduce a damage result to less than 1, a hit still deals 1 nonlethal damage (see Nonlethal Damage on page 252). Source Core Rulebook pg. 241 |
Certain creatures and magical effects can cause temporary or permanent ability damage, which lowers a particular ability score and can reduce its modifier, therefore affecting a range of statistics and rolls. See Ability Damage, Ability Drain, and Negative Levels on page 252 for more information. Source Core Rulebook pg. 241 |
