According to ESRB, this game contains: Blood, Intense Violence, Strong Language
Parents should be concerned. The game is chock full of the bloody violence and harsh language that your children love, and it's your job to keep them away from. So keep them away from this.
FPS fans, you can do worse, but why bother when you can also do a lot better?
X-files Fans looking to hear more David Duchovny talking about aliens might find this game worth a rental, but he doesn't actually have much of a character to speak of. And I can't imagine you're that desperate to hear him languidly discuss what it feels like to turn into a monster.
Deaf and Hard of Hearing Gamers are completely out of luck. For some reason, absolutely none of the game's dialogue is subtitled, which means your entire experience with the story will be limited to onscreen indicators telling you where to go next. Sure, you can still play the game, but frankly, I'd advise boycotting both it and Midway for thinking that, in this day and age, it's acceptable to release a game without subtitling.