What, exactly, is this mod? An improved version of the main campaign? The overview isn't clear and doesn't explicit state what the mod is.
Answer: It improves the main campaign by adding more units, skins, factions, and makes the AI behave less retarded. It adds new settlements too.
How do I change attack, defence and hp on the units? I know how to change the campaign, through descr strat, but I wish to improve some units.
--- Answer: Go for export_descr_unit in data folder to edit unit stats. But note that EDB is an unpacked file so you need to do an unpacking process. The unpacker is in the Tools folder if you install patch 1.01. You need to delete descr_geography_new.db to run the game after it has been unpacked.