In place of the campaign difficulty settings, you can adjust the AI. Unlike the original campaigns, this does not change the health of your enemies; only their AI (note that some missions don't use the AI, and will be unaffected by the setting).
An entirely new feature: upgrades only have to be researched in the mission in which they become available. You start with them researched in all subsequent missions.
How do you activate the feature of the research? I've looked in the game options of the skirmish map but I find nothing, how do get that feature to work?
You don't have to activate it; it's always on.
Thanks for making the ai adjustable...good for beginners..Cheers