Everything here seems really balanced from what i saw, i wasnt terribly interested in the Dhampir/Vampire stuff as far as my world or interests lie, but the glance i took, they all seemed very solid and pretty well balanced.
I really like the Magus class, and the amount of subclasses you have for them, all seem very flavorful and really cool, full of lore and pretty balanced abilities.
The one ability i questioned was Eldritch Armament, it seems pretty powerful, able to withhold a resource until you have verified a hit and then expend that resource for a powerful set of damage. I feel like it would be more balanced to require them to exspend the spell slot first and then roll the attack. That or limit the ability itself to a # per short or long rest.