Its hard to say because we havent received the storyline yet and we dont know the Cuations or Conditions of the game are.
But I ya Know Luke cant die Because he has to go to the Vong Series.
So Luke cant die.
Heres what I hope happens if there is AI interaction between characters. I hope the Dark Jedi , Kyle Katarn and Luke Skywalker are in a fight and....
You are fighting the dark jedi with Kyle at first then Kyle gets Killed and then after kyle is killed go on to Luke and Luke kills the Dark jedi.
I dont know I wish we had the story to tell
"I am the most powerful Sith and I will destroy you!"