What got me to watch this excuse of a movie is all the high praise in a few of the reviews posted. The Earth attacker is a Kunzi, a massive bug like creature with a gaping mouth (with teeth) which spawns huge number of Kuns, 2 meter bug like creatures which have devastated Earth. The CGI for the Kuns is done well, but the other major CGI with the flying vehicles loses it when they are outside on the Earth's surface, and it just look so fake. The survivors have fled to protected underground cities. Those cities have skyscrapers in them. The military has hopes to use an electromagnetic ray to destroy the Kunzi, but the city the weapon is located in has been breached by the Kuns, and left in ruins, but the weapon is intact. I think young kids might enjoy the movie, probably under the age of 15, since the script was likely written by those even younger. The initial concept of the Kuns is interesting, but the script falls apart with nothing new and very uninteresting since it is all too predictable. And yes, it continues with the Chinese movie 'requirement' having one person who is able to perform at a level far beyond any mere mortal human. Two stars because of the interesting concept the movie started with. But it really is a terrible movie beyond that.
