Hits and resulting damage are determined by the same roll, referred to as the combat roll. When attempting to hit, the attacking character rolls their level's attack die or dice, adding the appropriate modifiers for the attack type. The character being attacked rolls their level's defense die or dice, also adding the appropriate modifiers for the attack type. If the attacking character's roll is higher than the defending character's roll, the attack is a hit and the difference between the two rolls is the amount of damage inflicted. The inflicted damage is then subtracted from the defending character's hit points. If the attacking character's roll is lower than the defending character's roll, the attack is a miss and the defending character does not lose any hit points.
Any status effects or items that affect a character's attack or defense values are added to or subtracted from the combat roll as specified for that effect or item.