Not very good.

Look, I really think that creating a sequel was pointless, since the first game has already shown us what it can offer. By the way, I enjoyed Ultimate Defense a lot, but this second game isn't that good. I mean, it has its additions and everything, but the unit balance is horrible, like someone said, and the game is terribly boring for those who played the first one - it's basically the same thing! And it's bigger! Well, I've finished the game, and I wouldn't like to see more Ultimate Defense. You're creative, man! Don't stay on the sequel shadow.

Amazing sample work, my friend!