Long range fighter. Archers who are using bows require arrows. So always keep an eye out on your arrow count before going into the field as arrows are consumables. You can find arrows for sale in most NPC shops. Archers Damage with a bow is determined by the DEX Stat. So pump up that DEX. Similar to the mage AGI can help you evade foes while VIT can let you take more hits.
Hunter
Hunter is what it says on the tin. You're a remorseless killing machine that cannot be reasoned with or bargained with. The judicious use of traps to immobilize enemies allows you to solo some MVPs, making lesser enemies a cake walk. Groups of enemies are a bit of a hassle, and there are skills to deal with that, but mobs should be avoided. Unless you went full luck and have your accipiter hawk just brutalize anything and everything you notch an arrow at.
Bard/Dancer
You graduate from a high-DPS Archer to a heavy duty utility class; however, Bards and Dancers are still able to level on their own, using what they've learned from being an archer.
They have the ability to "perform" and lay down an aura that causes various effects based upon the song or dance used.
You'll notice that you can only become either a Bard or Dancer based upon whether you are a boy or grill: boys being Bards, grills being smoking hot Dancers.
For both classes you gain the ability to wield close-range weaponry that deal damage based upon Dexterity rather than strength. Whips for Dancers, Instruments for Bards. Both with respective mastery skills that also increase song/dance effectiveness. So max that mastery, really.
They can also throw arrows at enemies using their weapons. Kind of neat.
Both gain access to Ensembles which require both a bard and a dancer to have invested in, and they're pretty niche-use. Do not worry about getting one too much unless you have your heart set on it with a partner bard/dancer. No, bards can't perform with other bards; thas' gay, yo'. And dancers cannot dance with other dancers– that's forbidden love.
Now for the obvious differences between the two classes.
Bards tend to lean towards support, reciting poems, songs, and ballads that inspire those around them.
The first is A Poem of Bragi which decreases cast times and cooldowns, and you are going to learn this song or you are not a Bard. Its effectiveness is based upon the performer's intelligence and dexterity.
The second is Apple of Idun which increases max hp for everyone who hears it. Based on Vitality.
The third is Assassin Cross of the Sunset. It inspires people to stop being wusses and attack faster. Based on Agility.
The fourth and kind of lame song is A Whistle. It increases flee rate and perfect dodge. Based on Agility and Luck.
Bards also have a screen-wide skill that freezes abso-lute-ly everything named "Frost Joker". At level 5, it's a 40% chance to freeze whoever is unlucky enough to hear you attempt to make a joke. Even your party members. It's fun as h*ck.
Pastebin for editing the lines that are spat out when using it: pastebin.com/Pv54axVC
Overall, Bards tend to be the life of their parties.
Dancers however tend to be the center of attention with their performances.
Please Don't Forget Me is the name of one of their dances. It heavily decreases walk speed and attack speed for anyone caught in its range. Fantastic for WoE, an absolute nightmare to deal with when attempting to assault. Acts like a moving ultra-quagmire in PvE however. Attackspeed reduction increases with Dex, Movespeed reduction with Agility.
Service For You largely increases the SP pools of all who watch, along with decreasing sp costs, and increasing sp regen rates. It's a lovely support dance, and expected to be maxed if you plan to level in a party. Effectiveness based solely upon Intelligence.
Fortune's Kiss increases critical rates of everyone in eyeshot. Kind of lame, but pretty nice for melee attackers having trouble hitting mobs. Based upon Luck.
The last dance, "Humming", increases hit rate. Don't get this. That is, don't get this if you aren't planning to get Into The Abyss for fun Abra Kadabra parties with a bard friend.
Dancers get a screen-wide stun, as compared to bards who get a screen-wide freeze, named Scream. You shout lewd things at everyone and the shock causes them to drop everything. Even your party members. Fun.
When either class transcends, they gain some more utility. Neat things like Arrow Vulcan which will make up for being a really slow attacker with a 1200% attack burst of arrow-slinging, Tarot Card of Fate which can and will fuck up everything and everyone in PvP if they're unlucky enough, Marionette Control which endows a party member with half of your stats (you can't do fugging anything while controlling someone), and Longing For Freedom which allows you to move around and act while performing an ensemble.