The main review has likely already informed you as the the blood in this game. While there is a notable amount of blood, no gore is present. Also none of the enemies killed are human, they are abstract demons. However, it should be noted that Dante is a surprisingly good person. He has moral values and actually refuses to give in to temptations like greed and lust. He also genuinely cares about the people he encounters, his relationship with his brother, in fact, is a fascinating one that should be given much more credit. The blood may be heavy, but I've honestly seen worse in Uncharted, which has similar amounts of blood and the enmities are actually human, and that game received a T rating. I'd say 14 is the right age for this game.