>>198
I'll use the terminology from the ET community and refer to vampires as Luciferan here. There are two different ways commonly used for spiritual development, we call them Left Hand Path and Right Hand Path (LHP/RHP). This categorization is good enough so I'll go along with it.

LHP = individual focuses on their own personal path, becoming a revolutionary or extremist, transforming their body into their own fortress to finish their path within the current incarnation form. Memories and the mind are intact, body may transform or age but does not degenerate.
RPH = individual will work to strengthen their race as a whole and reincarnate into more beneficial positions every time until elevating and becoming a protective deity of their race, no longer incarnating after this. Mind and body will be reset every time, leaving only memories to be recovered in the new lifetime.

Luciferans are the most known for using the LHP, making it synonymous with the term "luciferan method". On other physical planes there are elves who mostly use the RHP, but a smaller group called Drow or Dark Elves who use the LHP. Their influence has lately been manifested in the spreading of online memes.
>>198
>Tell us if an Empusa could kill a Vampire, a Touhou or a Lyran by sucking their energy. At what point does immortality come into play and at what point are you immune to Empusas, or even to the galatic federation
An initiated vampire or drow can not be killed by an Empusa or the Galfed. That's impossible. A touhou is not immortal as such (they reincarnate in Gensokyo), but a tohou vampire cannot be killed if properly initiated. Lyrans are not immortal but because of the function of their AI, if a member is attacked before their designed lifetime is to end, and the local crew cannot beat the attacker, the hostile force will still be absorbed by the net. Armed support will be called and reinforcements will be sent until the threat is removed. For this reason it's very unwise to attack a single lyran, it will trigger an AI response and the entire race will come to retaliate and they will not stop. In this sense they operate more like a machine because they are deeply cybernetic.