I just finished the entire campaign online through Coop with 3-4 guys which took about 2-3 hours by skipping the movies.
I had a lot of fun, I love killing Aliens and blasting them apart with my Pulse Rifle, love hearing the gunfire as it tears them apart through my 7.1 speaker system.
I don't often give reviews on games, but I don't think this is really a "bad game" it's pretty much a generic FPS horror that you would expect to had played in the mid 2000's around when Doom 3 was released. It's very easy to compare this game to Doom 3 too, I feel how how the missions play out and how the game looks is pretty much the same as Doom 3, graphics wise for sure, the gameplay is pretty much the same too.
I don't think this game gives justice to the Aliens world, I feel that AVP2010 was better in many aspects. The Marine campaign was better in that game and I was more honestly scared or better to say.. worried about being attacked by Aliens then in this game where they don't scare me or am not really worried about them. That's not to say, this version didn't give me many "jumps" when playing and had my heart racing at times, but for pure horror and scary, AVP2010 wins.
Aliens vs Predator 2 had a more "horror" feel to it, you honestly felt more alone and screwed in that game then this one.
The story could had been better, a lot of things could had been better and there are some annoying bugs and problems for one that really annoys me is that soon as a joystick is plugged in, the game thinks you are a xbox. Secondly, since I play many Japanese games I have to set my system local to Japanese. Doing this makes "this" game crash. My friend uninstalled this because he was fed up with the crashing and rebooting between setting the local from UK to Japanese.
but I can honestly say, am really enjoying this game, coop online is fun and I hope there be more coop style games coming in DLC's later on. Now, I just need to try my hand at MP and watch all the movie clips on Youtube because we skipped them when playing.