After finally being able to install and play the game this weekend I have to say that I'm enjoying it quite a bit. I really don't understand the complaints about the graphics, but then again the most modern shooter that I've played recently was FEAR 3 so I can't really say what the graphics level of shooters are like these days, plus I don't have a very powerful system either so I wouldn't be able to see the graphics at full settings even if it they were better.
The gameplay, so far, is pretty good although the NPC AI is a bit on the weak side, I like how they tend to not follow you if you've wandered off the path a bit to explore and then get back on track. The aliens themselves are pretty tough and I don't think that I've ever died so often in a shooter before and I'm only playing on Soldier difficulty, I'm really beginning to hate those bugs and actually relish the parts where I fight the mercs.
My only real beef about the game is the checkpoint save system, is that trend in shooters these days? I hope not because I hate the checkpoint save system, I'm used to and like being able to save anytime, anywhere that way if I mess up and/or die I don't have to repeat whole sections. I also dislike it because it means that I have to commit to a certain minimum play time where as with the save anytime system I can play for as long or as little as I like because it allows me to grab a quick game in even if I don't have much time to play or I can just save and quit if I have to go somewhere or do something all of a sudden.