I feel sorry to write this, but lets be honest.
First of all the triggers: They work, but they work a the wrong moment. Eye-candy: Wrong used, blank maps, but the cities are good. If you had tested this scenario e bit more, put in a lot more content, used your eye-candy well, this would be a good scenario. I played it in 10 minutes out, so that also a bad thing: it's too easy.
But after all this is a funny scenario, with funny sounds.
I think you have still a lot work to on this.