First, this is a brilliant, co-op shooter. this is great to play in groups
yes i will ahve to admit, the dismemberment and blood would be a bit much, for children under 12 that is. the actual game play is quite tame, i was playing worse when i was 11 and I saw more violence on the tv back then.
the thing this website failed to inform you about is the games "low violence" mode, it reduces the blood and dissables the dismemberment, turning it into a very tame shooter.
Link from developers website: https://support.steampowered.com/kb_article.php?ref=5402-YUJX-7271
This is a brilliant game and the rating the website has given it should, must be reconsidered using the low violence mode. and perhaps reviewed by a actual gamer?