The experience is there, but this game isn't so much difficult as unfair.
Once someone gets hit by a xeno, it's fucking over for them. It always gives you a chance to attack like that's going to save them or something, but even if you do kill the alien, the person is still incapacitated. Why even bother?
Secondly, in Operations, SO MANY XENOS come out of the fucking woodwork that it's absolutely ridiculous. The inability to control Burke makes this literally impossible because everybody's dead by the time he get's his fat ass down the hallway, and then he sits in a closet waiting for his shit to get wrecked.
This game seems like it'd be a lot of fun, but the difficulty prevents me from having any kind of fun with it.
It's a good looking game, but it's just no fun to play.