In Knight PK for an archer can starts at level(knight gold) 60 because that is you can get the skill Shadow Hunter. It has the same % damage as ARC shot, but it will hit 100% sure within a reasonable distance assuming there is no tree or other object in the arrow's way.
From experience of all characters mages are the most dangerous for archers, because like archers they are fairly ranged too. Second would be sin's, because of the stealth, lightfeet and high damage dealing in a short time. You will have to realise an archer is not melee, you are supposed to do damage from a (safe) distance. Being archer means you got to run/flee a lot, which can be really funny seeing that even the fattest warriors cannot even touch you.
As a successful player you should not die that much, of course mistakes can be made and lag happens. With that said archers unfortunately have the disadvantage of not doing that much damage. For Solution you can party up with one or more archers (2 archers damage equals ~1 sin damage). Add a duff-priest and you got NP raining from the skies. Buy the way you can buy Knight powerleveling service for you.
