Aside from the audio, which is used soooo often it starts to ruin it for the nostalgia. This game feels nothing like its daddy, The characters are horrible, the story is almost no-existent: Mission, crash, leave, done. It's sad that even when familiar faces make their way into the game it becomes a face palm, this is bad. You'll wait longer for it to be delivered to you than you will actually playing it, don't waste your time.
I was expecting so much more from this game, but I guess that is my own fault. This game, an Alien game, only has aliens in 6 of the levels, and 3 of those you still fight a ton of humans. This would also be better if the AI wasn't so stupid, that you can just run through the levels without killing anyone. I honestly thought that the company that brought us Borderlands could deliver on this one.