As I describe here my aim currently is to see if I can't find some sort of standard container with all of the world objects in a way that hopefully let's me access their member variables (such as coordinates, health etc).
I have made a promising first step, although it wasn't really much of my doing. I have found that
TERA.exe+1A1DB34 +f 0x14 + 0x44 + 0x10 gives some sort of integer ID to npc's in the world. This only works for npc's such as towns folk, farm animals, gathering points, but not enemies. I have yet to get any other good information out of it, but I am searching.
Is there a usual prescription for finding what I am describing? 'Object lists' might not be exactly the right keyword, but I assume every game has some type of object manager that utilizes some type of container.