She fights me on that. He embarrassed her once when she took him with her and a friend, he straight up had a convo with her about red and blue people, like when you do the eagle vision. Lil man was like, you kill the red people with swords and guns and blue people are your friends and my wife told me that her friend was like wtf. Then he stopped talking to play some legos.
I told her that, because it's me allowing this, it is up to me to explain what it is he's watching and playing. Violence is in all forms of media so it strikes me as hypocritical to not allow this to be played by him. He and his brother wrestles, plays with star wars lightsabers among other things so this fits squarely in that, in my opinion. It's not like he's playing GTA and MFing everyone afterwards. My son just walks around AC towns, Deeboing people and looting them when he gets done.
Assassin's Creed is for me, he just likes it like his dad does.