I watched it this evening. It's John Rambo levels of gore and violence, plenty of heads go missing.
It's like the first on in that it's exactly what you want it to be. JCVD makes a good bad guy, if they still made Bond films like they used to (i.e. entertaining and enjoyable rather than the daniel craig shite), he'd be a good Bond villain.
Arnie really does show his age alot though, less screentime for him wouldn't have been a bad thing. But if you're a Schwarzenegger guy i don't think you'll mind.