Punch

An ordinary bare-fisted punch deals 1-3 damage, plus any Strength bonuses. Headbutts, forearm smashes and similar blows are treated the same way.

Street Fighting (500 X.P.) is the skill of trained brawling that makes a character proficient with the fists. A character whose Strength equals or exceeds that of a creature immune to non-magical weapons can still batter it bare-handed, doing half damage.