Duelist: Can only equip a single one handed non-blunt weapon and no shield, but gain increased damage/crit, reduced ap cost for attack, and increased dodge/parry. Receive extra penalties from being flanked, but can also backstab without daggers.
That shouldn't require a talent but work like that out of the box if you choose to fight with a one-handed weapon and without a shield. Bearing shields should reduce crit-chance and dodge and increase AP costs but should also grant massive additional armour and stat bonuses.
I'm not a friend of the backstabbing thing though. I think backstabbing should only work for daggers no matter what.
