@ApocalypsA, Paladins have holy light that deals true damage with each hit against the undead. They also have combat magic that is effective against the undead, dealing double damage to them. They also have consecrated weapons. In addition, they receive the double karma of Innos.
Archers don't have any special skills right now, as they don't have their own full-fledged guild. Of the general skills, they have the skill of piercing the target and can take the gift of accelerated string pulling. This class has no other features. Of the marksmen, there is currently a crossbowman-only guild, which unleashes them to the maximum thanks to guild skills.