I played through it with all three characters. Not a big fan, honestly. The two available stages are short, bland and easy, the music is boring, I'm not a fan of Ninja Mode and I find myself really missing the two-way shooting of Deathsmiles. I've heard that the other stages are longer though, and the demo had no screen options so I had to play with the shitty default ones. Also, you couldn't try the Arcade and Zetsu modes. Perhaps I'd enjoy the game if I had access to all it has to offer... hopefully Rising Star will bring it over so I can see for myself.

I recommend everyone download it. There's a novice mode (press X at the start menu, I think) for those who really suck at this sort of game.