Fantastic game that anybody should get. However there are some pause moments you should know about:
Language is very foul, and I'm don't have the cleanest of tongues. I squirmed at the multiple F-bombs, and the context they used it in. If you child can handle it, then its no problem.
Violence- While there is absolutely no incentive to shoot anything, the same can be said when turned around, as you can shoot almost everybody and everything. I've tried to test how open-world the game is, and it is VERY open world, as you can shoot civilians, hostages, and police- even if it is strongly not recommended. Remember, if your child is very impressionable, the openness violence may be of concern to you.
Sexuality- almost non-existent. Yeah, some scantily-clad women say some, 'sexy' things to you, but it's not that bad. They are referred to as, 'working girls,' and you cannot engage sexual activity with any of them. This is the least of your worries.
Alcohol and drug use- I never really notice it, but you can consume beer and whiskey, and you can see people smoking. No biggie.
Role models- Kind of a karma system here- Adam Jensen can either be a hero, who puts the welfare of others ahead of self, never kills, and prefers to get in and out quietly without being noticed. Or he could go on a murderous rampage, be verbally mean and disconnected to everybody, and likes things violent. The good thing here is the grey -zone that many other karma games leave out. For example, Mr. Jensen here can be stealthy and nice, with a high moral value; BUT he prefers lethal weapons. See what I mean? You can choose how Adam behaves in this world.
Lastly the Story and theme of the overall game is AMAZING! It's a fantastic journey you NEED to experience! It deals with many moral issues, and has tonnes of exposition and story to dive into. You can feel the world around you, how people react to the things that are happening. In short, this game sucks you in and makes you feel like part of this world. You need to buy this game- after considering the above. You won't regret it.