According to ESRB, this game contains: Blood, Violence
Parents should be aware that there are several depictions of dead bodies and the usual gunplay, although surprisingly, nothing was too gruesome. (Probably because the graphics are so sparse.) Kids who can handle the violence will find it highly frustrating and boring, though get them something else.
Skinflint alert: the game cannot be played without purchasing a separate USB headset. If you don't' already have one, you'll need to pony up.
Survival Horror or Sci-Fi fans may be interested, but only if you really need to own every single game out there. There are dozens of other titles that are far better, and the voice interface adds nothing to give it an edge on the competition.
Fans of quirk (like me) will be intrigued by the concept of voice-commands, but it really, really didn't work out in this case. The recognition is spotty, and instead of boosting gameplay, it drags it down to unbearable levels.
Deaf and Hard of Hearing gamers: No surprises here, you're all totally out of luck. The game requires extremely clear speech, and there are no subtitles or captions for the game's auditory dialogue, which there is a lot of. Don't even think about getting this game if you have any kind of hearing or speech issues.