1. There are Hunters and Crossbowmen. Hunters end up as Bowmasters which are usually meant to be bossers, usually solo bossers. They do a good amount of DPS and have the right skills to deal with area bosses like Anego pretty easily. With Hurricane they can dish out enormous amounts of damage to a single target. Crossbowmen end up as Marksmen which are also good single target damagers but not quite as good as the Bowmaster. Their skills are more around mobbing where they can hit large amounts on a large amount of monsters especially with Piercing Arrow.
2. The main stat for archers is dex and their secondary stat is str. I've seen archers go strless but those archers don't last to endgame. It's good to cap your str at a certain point where you will be able to cover the rest of the required str to wield your endgame bow with the rest of your equips because there aren't a lot of statless bows unless you're going for the visitor weapons.
I went Bowmaster and it was my very first character so I didn't really know much. Either way it was a tough journey through leveling but in the end I think it paid off nicely. Archers are actually not easy characters to raise.