This movie is nothing amazing for sure. Yet it is very interesting scifi retro futuro B-class movie with a lot of swordplay and somewhat acceptable effects.
The only way how to describe this movie is mix of Star Gate with a lot of Kurosawa and maybe a little bit of Tron and Doom (the computer game, not the movie). Both parties, the cyber demons and the humans fight as they would were teleported from medieval Japan. The story leaves a lot of parts unexplained and it is open for the imagination of the viewer as it it typical for "genuine, non-Westernized" Japanese movies. This is not bad in general but it will probably leave a lot of Western viewers confused.
The movie is definitely not something special. It is probably not worthy to seek on DVD either. But it is enjoyable and well done in terms of its probably tight budget so it is not insult of the viewer nor a loss of time. It allows us to see "retro cyber punk" as it is perceived by the Japanese authors. It is comparable to "Mutant Chronicles" which is not miracle either but it is solid fun anyway. I think the more hardcore scifi fans will like it.