This film is virtually unwatchable in this print. The colour has deteriorated significantly and in the many night time scenes it is so poor that all you can see are shadows moving around in the sludge - you cannot make out what is going on. If you really want to watch this film seek out a better print.
The few glimpses I had of this movie were intriguing, but the low quality of the transfer made it unwatchable. Most scenes were so dark the figures were indistinguishable.
I agree with VW. The print is blurry, lacking definition, and the night scenes are direly unseeable. (I've always found 'Throne of Blood' best defined in terms of varying greyness, and of Kurosawa's major films, it's the one I least like.)
Thus the two stars.
The story, however, though standard fare, was good enough to grip and I enjoyed seeing Mifune under the direction of someone other than Kurosawa.