This is just an intro about the Race Kruxena and their jobs/classes, Hope its useful to your guys.
Kruxenas are endowed with both strong strength and spirit: they can use short and long range weapons, and can become skillful in magic. They are brutal and cold hearted since they are a race created for the purpose of destruction, and will even sacrifice their companions to accomplish their ends. Kruxenas have no qualms over mutilating their enemies, and tend to be antisocial.
Kruxenas were created by the ancient Natsu race to be humanoid weapons. They are unfriendly to all other races, except for Baturks since they share some of the same genes. Their wickedness and contempt starkly contrast with the more compassionate Turans.
Weapons that they can use: Claws, Dual Swords, Any One-Handed Weapon, Shields, and Crossbow.
Warrior classes use light, short range weapon to perform quick strikes, supplemented by DOT attacks. mostly they use Dual Swords(I prefer this than Claws, for they have better stats) and Claws, They can also use long range weapons, the crossbow(I don't recommend you to use crossbow for the first skill compatible for crossbow is at level 30, most of the skills in level 1-20 are only compatible for Dual Swords and Claws) in preemptive attacks. Magician classes use DOT magic to curse and poison enemies, but they are more vulnerable than the warrior classes.
Has the Possession Beast, Giont, has fire based physical attacks with high strength and physical defense.
Rouges - Rogues specialize in speed and brutal attacks. They tend not to care about the suffering of their victims, and will even kill retreating enemies. Sometimes, their arrogance makes them vulnerable to distant attacks from enemies.
Rogues generally use Keen Claws and Dual Swords(like i said, i prefer Dual Swords) to swiftly strike enemies at short range, but they can also use long range weapons to strike escaping foes(i am discouraging you to use these, like i said level 30 for the first skill compatible for crossbow, besides you will unlock a dash skill in level 20 to catch up the fleeing enemies. They can use hiding skills to avoid detection from enemies and monsters(only effective in monster lower than your level, and slows your movement speed),at level 30 you can spawn your own Doppelganger, its like your own pet, you can command him/her to attack or retreat at the targeted enemy, and you can set him/her at Aggressive Mode(attack nearby enemies), Defensive Mode(attack enemy that attacked your character) and in Manual Mode( the doppelganger will not do anything unless you command him/her), uses Leather Armor for it gives DEX, CON, STR, and HP stats.
Soul Hunters - Soul Hunters developed spiritual abilities to use vicious magic that exploit their enemies' psychological weaknesses. They specialize in cursing and weakening their foes, but are physically weak.
Soul Hunter use their curses for both both short and long distance attacks, and are adept at disrupting their enemies' spiritual stability. The curse property DOT attack constantly depletes the victim's HP, making him easy to defeat with a strong, finishing attack, uses a Wand and a Shield as a weapon, at level 10 can spawn an Illusion, just like the Doppelganger but can't attack your only, basically only a distraction for your enemies, and uses Cloth Armor, for it gives INT, CON, MND, and MP stats.
Note: You will unlock these when you reached level 50.
For Rouges: Assasin - Assassins always get their targets with their swift advances and quick movements. They can use various weapons, and are particularly skilled at using poison that can speedily inflict lethal damage. An Assassin's arrogance occasionally gives enemies an opening to attack him from a distance.
Assassins usually use dual weapons for short range combat and crossbows for long range combat. They are skilled at striking their enemies first, and pursuing them to finish them off. Their hiding skills can also be used to cause great damage to distracted enemies, its basically a Rouge class, but now can hit multiple targets.
Shadow Runner - Shadow Runners have fearsome possession abilities that they can use control minds. They use deadly poison to confuse their enemies and make them more susceptible to possession. They can use short and long range weapons, and can also break the concentration of magic casters to impede their spell casting.
Shadow Runners typically use long range weapons to keep enemies at a safe distance, and can slowly kill foes with the continuous damage of the DOT skill, basically a ranged Rouge.
For Soul Hunters: Defiler - Defilers can control both the bodies and minds of their enemies. They use phantoms in conjunction with psychological exploitation to assume a great deal of control over their foes. Defilers can also absorb an enemy's HP to restore their own.
Defilers can disrupt and attack their enemies with their de-buff abilities and wide range DOT attacks. They can confuse and weaken multiple enemies at once.
Dominator- Dominators can assert control over the dead: they can restore dead creatures to life, or summon netherworldly beings to attack their enemies. They are also very skilled in curse magic.
Dominators generally summon monsters, and then cast buff magic to strengthen their minions. These minions are sent to the front lines of battle, and Dominators support them from a safe distance by de-buffing their enemies.
That's it and Thank You for reading my Guide.