Has interesting moments, but mostly misses the mark on the intensity level it tries to reach. Although it has a number of noticeable elements from other movies & directors, I wouldn't spend the bulk of my time trying to compare Drifter to something like the Mad Max series, at that point you're setting yourself up for failure.
On its own, it's at least worth a watch. It does have a high rewatchability factor to it, I can see myself owning this…