1. How can a character grant acausality type 5? I heard from a lot said that being untied, independent or outside the causality system without any further evidence about whether they were untouchable/uninteractable or not, can't be qualified as this type and it was just acausality type 4 in a higher degrees.
It's pretty simple. Firstly, you need statements of being free, unbound, or transcending causality as a whole. Time works as well, however, causality needs to be a part of time for it to qualify. Secondly, you need showings of being untouchable due to your relationship with causality.
Unable to be touched, unable to interacted with, unable to attack, any of those examples work for the second requirement.
2. Can someone explain about transduality type 3?
Dualities are rather simple, they are the opposition. Hot and Cold are a duality, without heat, there is only cold, and without the cold, there can only be heat. They are directly linked, yet directly opposite of one another. As such the same goes for existence and non-existence, they are exact opposite but appear in the lack of one another.
Dualities generally have 4 Truth States, for example; You can be hot, or you can be cold, or you can be hot and cold, or you can be neither hot nor cold. 4 Truth States of a single duality. Transduality Type 2 is transcending dualities like these, or being non-dual entirely.
Transduality Type 3, is like that but with 5 Truth States. Using Existence & Non-Existence as an example; You can exist, not exist, both exist and not exist, or neither exist and not exist. However, since it's 5 Truth States, you would need an additional state, one that is not like the 4 I just mentioned.
And then you would need to transcend such plurality or be non-dual to them, either work.