Chapter 1 - Non-weapon Proficiencies
Blind-fighting Non-weapon Proficiency
This allows characters to ignore many of the problems inherent in fighting without being able to see. In total darkness, the character suffers -2 (not -4) to attack rolls, and suffers no penalties to AC versus melee attacks. In starlight or moonlight, the character suffers only a -1 penalty to attack rolls.
When moving in darkness, the character is allowed to make a proficiency check at the beginning of a round; success means no movement penalties are assessed because of the darkness, while failure means the normal penalty applies.
When in combat with an invisible creature, the character with blind-fighting proficiency suffers only a -2 to attack rolls, but gains no benefit toward discovering the creature.