I just don't generally play games with guns. I'm not saying it's violent like COD or something. Just more gun-blam-y than I usually play.
To give you a baseline for my preferences, I find Metroid games more violent than I care for, but I find Kid Icarus charming and not too bad, although it's the most violent game I'd tend to play.
If I'm mistaken I'll be glad to check it out.
Did you have any interest in the latest XCOM series? This game seems to be on par in terms of gun-blam-y-ness.