How do I make heroes to gain experience above level 5 when you are killing Neutral Hostile units? And I only want to know how to do it with Neutral Hostile, I'll appreciate that!
Actually, it's in the Gameplay Constants menu. Look for something in the "Hero" area called something like "Exp from creeps". There should be multiple values; each is the percent of exp from creeps for each hero level. You'll notice that after level 5, you don't get any.
If you want them to always gain full experience, just delete all the values but one, and change that one to 100.
Yes. my mistake. it is game constants. the actual field is called "Creep reduction Table". it says "80, 70, 60, etc.". That is the one you need to change to 100. (you might be able to just leave it blank.)