Alright, I decided to go tour the Beast's Lair Tsukihime Remake Page for the game and the localization is stated to be a step up from Witch On The Holy Night(Which did have some issues(I remember one being that a certain proverb couldn't work well at all translated but they tried and failed) but was otherwise solid.
They also renamed alot of things from the fan translation so yeah...
SHIKI is now
Shiki(Yes, it's meant to be Italics) and if Shiki is meant to be emphasized, it's now in Capslock(the unironic switching)
Event Storage is now Phenomena Containment(I have seen mixed reception to this, it's either too long or it doesn't seem like it adds the temporal aspect like Event does compared to Phenomena. I'm fine with it.)
Luminary is now Lumina(This is less so, I think Luminary works better but looking at Google, I think they went with the Latin version of Light which if we go by how it's stated:
LUMINA is the Latin word to describe the LIGHT, origin of knowledge and of great historical movements.
I think it can work) Also, I guess they did a name drop with the latest Melty Blood game the entire time...
EDIT: I'm pretty certain Lumina is meant to be another fashion to close to how Archetypes are described to work in Lostbelt 7 as basically those who chronicle the life of the Prime Species that live on the Planet and otherwise... but then you have other True Ancestors being able to hit this form as well but then they are also the split off essences of Type-Moon so whatever.
Andrei Godbivouac is now Andrei Godbevach
Further grabbing from it from the Artbook(Which I plan on getting in a few days with the limited edition for the Switch):
Shadow Stitching is Shadow Binding, and The Plating Effect is now The Iron Bore.
Rank I DAs are now Zombies to differentiate from how RanK I-III are all together as “The Dead”. Rest of the ranks are unchanged.
I think Twenty-Seven Dead Apostle Ancestors was just completely shortened to Twenty-Seven Ancestors.
Castle-therefore-Kingdom is Castle-Ergo-Kingdom
The Material didn’t bring up the word Principle at all (in the translation anyway, they just avoided the subject and called them Idea Bloods mostly) so I’ll have to play the game to check what they did there.
Old Blood and Young Blood are Elders and Neophytes
Kind of a minor thing but they changed Shikiller’s Natural Enemy of Perfection to “completeness”
So yeah, I'll confirm it in a few days if no one else does but it is Beast's Lair and they got more credibility than most sites on this stuff so...