"Highlander" is a classic fantasy movie from the 80s, that was considered very violent at the time it came out.
The movie is also well-made and does feature great visuals (for the 80s).
The movie has some sexual references.
The violence is very brief and nothing compared to modern movie. There are many decapitations, but always bloodless, implied, from a distance or shadowish . I watched this movie as a 10-year old and i handled it. Not all 10 year olds will handle the movie, but i can say, that 12 year olds can easily handle it nowadays.