Martial arts

Usable by: Mercenary (level 4)
Assassin (level 5)

Mercenaries and assassins do more damage in unarmed combat starting at levels 4 and 5 respectively. Damage still isn't as good as with a decent weapon, but it will help out should you accidentally forget to wield a weapon or have one break on you.

NOTE: This skill is automatic, and requires no action on your part.

Assassins are slightly better with this skill than mercenaries. If player is both mercenary and assassin, the skill is even more effective.