This film is very interesting. Many people will scoff at it's production values, but when you consider it's era, it's really not that far off from its contemporaries. Many people make the mistake of comparing this movie to the Rambo franchise.
I suppose this is based on the way the Italians chose to market the film (with Nero with a headband and giant veiny muscles). But the more appropriate comparison should be with Arnold Schwartzenegger's "Commando".
In both films, a burly guy trying to forget his violent past has his daughter kidnapped and is forced to kill hundreds of ethnic stereotyped Hispanic folks to get her back. It's even got exploding guard towers and guys getting stabbed in Arnie "stick around!" style!!!