[GUIDE] How to create your own hero?

Could you please provide more details about which step from the manual you are having trouble with? I don't recall any instructions that require opening the map with an archiver or moving anything around. After launching the advanced map editor, open the map, go to the AdvMapHeroShared table, create a new element, configure it as described in the manual, then assign any hero and specify the path to the new shared object.