Good to see that you know so much about attributes and stats ;-)
I would be very interested about what effenct a CharacterLevelUp( _Character ) had on NPC's stats because if it worked it would allow for a far better control in any 'difficulty mod' than only adding +1 bodybuilding, +1 willpower and some additional AP could ever do.
I haven't dealt much with these files yet, so I don't know much more than basics.
I'm not sure if CharacterLevelUp in Osiris does the same to the character's stats as changing the act part (maybe there's also a difference for player characters and NPCs), so you'd better change act parts in the character.txt than operate with Osiris here (except for certain purposes).
Some properties may be relative to the level difference (like armor) but I haven't checked these things yet. Probably Sniper can tell more about that since he worked on stats and balancing for his standalone projects, or some other modders.
