if like first game all you have to do is use any unzip utiility to open those files, and can remove orig file afterwards. I play KB with everythign unzipped
Also note the their is a lua file that controls how many runes you get each level (again if it is like first game) it had hero in the name not sure though. Hero.txt also can change begining leadership and what is offered each levelup etc... (again if it is like first game) I can't wait for AP
but never buy digital so... waiting