Epic?: Surprisingly not so much. Most of it just follows a few typical stereotypical run of the military characters, (a few representing each colour, an imigrant, a woman, the calm one, the hothead, the on with an axe to grind, the joker, the has been, the one with something to prove to himself, etc) and only breif news cast of what goes on globaly.
Impressive?: No not really. There are a lot of explosions, but the aliens look cheap compared to "District 9" and there ain't even a much of screen time for them. Most of the ship designs also seems lifted right out from that film.
Original?: You seriously didn't even expect that did you? The plot is basically exactly identical from start to finish with "Independence day" and the aliens are very similar too! (squid like things in biomech armour) It's almost comical .
Now, I would have no problem with any single one of these points if it was well executed or interesting in another are, but it's not. It manages to be all stupid, uninteresting and annoying at once. If you don't hate most of the characters halfway through this, you should really consider a career in the military. You will then appreciate that 60% of the lousy also otherwise dialogue in the film consists of this phrase: "Sergeant sir yes sir! Affirmative sir, sergeant sir" over and over and over...
So, if you like alien invasions just watch Independence day, again if so be.
If you just want to see some urban warfare (with some shy aliens in the background) go on and see this one, or maybe "Generation kill" gives better value.