Just tried the "test" version and it's pretty good. I don't like the graphic style and have problems with the color palette (ememies vs background = you can easily overlook some enemies).
Anyway, the good things: the controls works great, more Contra style now. Also the level design is good enough, not too linear imo. Nice music hommage to Hülsbeck. One last hint: Use a Dreamcast to Saturn pad adapter. The gameplay feeling is brilliant with a PAL Saturn model 2/Japanese model pad. Best NG DEV Team game so far. Just ordered the game.