[quote=@Etcetera]
<Snipped quote by DarkwolfX37>

What are some of the best spiritual techniques? And how do you divine said weak spot?
[/quote]

You know chi, right? Where I'm from, that's an "eastern" technique, which are usually useful against "western" based supernatural forces like light-based angels. As for finding their weak spot, you'll have a much easier time if you decide to get eyes beyond those that chakra can give at the end of your training here, but without them it's pretty much trial and error. Try removing limbs or the head and see how they react to it.