Class Tree

Warrior(Melee)->Paladin(Light)->Crusader(High Damage)
Warrior(Melee)->Paladin(Light)->Templar(High Health)
Warrior(Melee)->Barbarian(Dark)->Pirate(Good damage&some agility)
Warrior(Melee)->Barbarian(Dark)->Death Knight(Good damage&some magic)
Mage(Magic)->Wizard(Light)->Archmage(Powerful Spells)
Mage(Magic)->Wizard(Light)->Cleric(Healing Spells)
Mage(Magic)->Sorcerer(Dark)->Cultist(Powerful Spells)
Mage(Magic)->Sorcerer(Dark)->Necromancer(Summoning Spells)
Rogue(Stealth)->Thief(Light)->Archer(Bows, Knives)
Rogue(Stealth)->Thief(Light)->Spy(Steal,confuse,poison,etc)
Rogue(Stealth)->Assassin(Dark)->Hunter(Bows, Traps)
Rogue(Stealth)->Assassin(Dark)->Alchemist(Poisons,Potions)