or if you want to do it cheat style...
if you want to do it cheat style, lol, you can just type npc spawn kyle and npc spawn luke in the console. they'll sit and fight it for like three years before they die, and you can go on and finish the level on your own pace :P.
YORIMOTO says SUMiSUMi!!!
"When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation." - Thomas Jefferson
"It is vain, sir, to extenuate the matter. Gentlemen may cry, peace, peace; but there is no peace. The war is actually begun! The next gale that sweeps from the north will bring to our ears the clash of resounding arms! Our brethren are already in the field! Why stand we here idle? What is it that gentlemen wish? What would they have? Is life so dear or peace so sweet as to be purchased at the price of chains and slavery?
Forbid it, Almighty God -- I know not what course others may take; but as for me -- give me liberty or give me death!" - Patrick Henry