hey_it's_that_dog
benevolent sexism
Actually, I counted the ones that occurred with Tenzin and Flynn as well so my rough estimate is around five to six. But you're right about the first one being the most difficult. The others are just tedious, for lack of a better word.
I don't like the first encounter with the blue-men at all, but the last one is actually kind of cool because you can hang back and let some of the heavies do your work for you. It does a good job making you feel like you're crashing a party that's already going on in that the enemies don't ALL start attacking you the instant you start firing on them.