Attack Score
From Talisman Wiki
The attack score is used to determine the winner in battle or psychic combat, both in the case of combat between two characters and in the case of a character vs. a creature.
A character’s attack score is the attack roll plus the character’s Strength, plus any other modifiers that may apply.
The total of the creature’s attack roll and Strength is the creature’s attack score.
If the character’s attack score is higher, the creature is killed. If the creature’s attack score is higher, the character is defeated and loses one life. If the attack scores are equal the result is a stand-off.