This is a rather… interesting campaign. The first scenario pretty much just demonstrates how fast Trebs can kill Wonders. You start will a bunch of Trebs surrounding enemy Wonders. You just sit back and watch your siege weapons totally demolish the Wonders... fun fun fun!
The second scenario is not bad... it is actually kind of fun to play, and you actually have to do stuff, rather than just sitting back and watching. Unfortunately, totally awful map design and nearly no difficulty at all hurt this scenario greatly. The author did do a pretty good job with the triggers, and the scenario shows at least a speck of creativity.
The entire campaign has very short Story, and nearly no instructions. The first scenario is easily one of the worst I have ever played, and the entire campaign seems there only to show what Siege Weapons can do... which I think we already know.
I will say this though: if the first scenario was as good as the second one, this campaign would be around a 3.2. As it is now, don't waste your time on it.