According to ESRB, this game contains: Blood and Gore, Violence
Parents should avoid this game like the plague. Not because it's excessively gory (although it is), more because it's unbelievably bad. Give this to your children as a gift and they may never forgive you.
Todd McFarlane videogame completists will want to pick it up, as it lives up to his personal standard of incredibly bad licensed games.
Deaf and Hard of Hearing gamers should be fine, since there are no audio cues of any kind, and all the dialogue is presented in writing (and only in writing). They still shouldn't play the game, though.