System Reference Document

ATTACKS 

A character Attacks when he attempts to use a Combat Skill to harm another character or a monster. Unlike Skill Tests and Attribute Checks, players making an Attack want to roll high. A higher Attack Roll is better than a low one. 

To make an Attack, roll 2d6 and add the Skill Bonus from the relevant Combat Skill to the result. Firing a handgun would use Pistols, whereas swinging a baseball bat would use Clubs. 

If you don’t have the relevant Skill, apply a -2 Penalty to the result of the roll instead. If the result is equal to or greater than the target’s Defense, the Attack hits; roll damage. Other Bonuses or Penalties may be added to Attack Rolls, based on the Techniques used. (See Combat Rules for more details.)