I quite enjoyed AVP2010 as the marine as on hard it was a real challenge, despite its flaws. It also looked rather good in DX11 mode with all the bells and whistles enabled. The online modes for it weren't that great though sadly and got boring very quickly, although infestation was a good laugh every once in a while.
I've read numerous reviews and watched a few of the video versions and this looks seriously pants. I laughed at a scene where the dropship got destroyed and it just split into a few large pieces of basic brown polygons with no detail at all, with an appalling 2D explosive fire effect to boot...
IGN think that the game will have a tonne of DLC for the multiplayer to actually make it fun, which is a complete no go for me, especially if the game is poor to begin with. In a game like DNF, having loads of weapons at once makes more sense as its not based on anything but pure carnage and over the top violence. Aliens CM is based on a film though, where the marines didn't have 10 weapons each with daft amounts of ammo for each, which ruins the atmosphere imo. Coupled with the fact that the aliens in this are next to useless, especially compared to the previous games, it just crys of "hold your hand console gameplay" at its finest.
Look at AVP1 for example. If the aliens got in melee range, you was dead. In AVP2 is was slightly more forgiving due to larger, more open level design, yet the elevator section in particular as the marine still shows that its a "melee range and you are dead" sort of game, which is great. AVP2010 wasn't like this until you put it on hard, then it became a good game (imo!). This just looks pants :S