Most common attack actions are described below.
Characters without the Combat Martial Arts feat can make one attack action per round, plus one at level 3 and every three levels thereafter.
All characters can make a move action in place of an attack action.
Making an attack is an attack action.
A character capable of making more than one attack per round must take one per turn in order to make more than one attack.
With a normal melee weapon, a character can strike any enemy within 5 feet. (Enemies within 5 feet are considered adjacent to the character.)
Striking for damage with punches, kicks, and head butts is much like attacking with a melee weapon.
Unarmed Strike Damage: An unarmed strike from a normal human character deals 1d6 points (plus the character’s Strength modifier, as normal) of damage.
Attacks of Opportunity
The combat rules assume that combatants are actively avoiding attacks, where they can. Sometimes, however, a combatant in a melee lets her guard down, and doesn’t maintain a defensive posture as usual. In this case, she can take advantage of her opponent’s lapse in defense to attack instead. These attacks are called attacks of opportunity.
A combatant who makes an attack of opportunity does so in place of her defense against the initial attack, instead choosing to attack her attacker, who can also not defend himself, nor can he make his own attack of opportunity.
Attacks of opportunity are immediate attack actions.
In addition to attacking, a character can use her attack action to defend herself against an attack.
Making a Reflex save to take half damage is an attack action.