Comments of chapter undefined of The Second Chance in the Different World

Every dead apostle is conceptually protected and cannot be killed with ordinary magic! They are immortal and have high regeneration! In the church, they use many special spells and black keys, after which they burn every piece of the body so that they do not resurrect !! How could he kill a bunch of dead apostles with two basic spells !! ?? How could he take blood from a spirit ?? Servants only look like humans, every part of their body including weapons and clothing is a projection of their soul, they have no DNA !! Only servants of the class Caster, Archer and Assassin can go into astral form! How could he take blood from Hercules ??? To pierce the skin, Hercules needs at least a noble C-rank phantasm !! ?? Translated to google translate !!