This scenario ranges somewhat. Some things are pretty good, others aren't so good. In general, it's a mediocre scenario/campaign.
The playability should be placed somewhere around the middle. It's not bad, but it's not good either. For the most part of the game, you are raiders. Then after taking Padua as your own, you get some villagers and can begin construction of an army. But, the author's suggestion of using a fleet of cannon galleons is quite useless as the river is too narrow for cannon galleons to be any good. Plus Milan, the final city, is pretty weak and can be taken easily.
The balance was bad. Every time I attack a city, it resigns. So, I didn't really do anything and I won. But I will give a 2 for the effort.
The creativity was pretty good, not exactly the most practical, but good. You see several times people charging you for services are threatening you for money, which is good stuff for creativity. However, it lacks in creativity in some other areas so I will leave it at 4.
The map design was mediocre throughout the map, as the use of eyecandy was minimal. But it was Padua, which was entirely empty except buildings, that bogged the score down to a 2. Large blank areas of only one terrain type is about the worst you can do in map design, so note that.
The story and instructions were both good, as there is a limit to how good a story can be told in AOK. The instructions were also pretty clear (if not obvious), so it's all good. But the story needs to be more "rich" in order for the whole thing to get a 5.