So Archers are usually good at this. We will go out on the limb as everyone else saying they're overpowered because most think so but they've tried balancing classes 4story Luna. Anyway dueling and PvP is super fun and this is where Dexterity comes in big time. The more Dex you got the less you're going to be hit and the more often you are going to deal your opponent damage.
4Story: Now here are a few things we do in battle it is just our strategy d not necessarily have to be yours. Please experiment. And if you find something a lot better feel free to post it here. Facing a Summoner - In our opinion they seem like one of the easier classes to kill, but you have two things to kill. Destroy the pet first with Sharp Arrowhead then a few shots of regular shots. In this time the Summoner will be preparing to smack you down with a barrage of skills but once the pet is dead the Summoner soon falls too.