From the wii u perspective it will be like a FPS? For a basic project its look very nive the illumination and the shadows are well done, it's a bit empty and a soundrack or more levels could be the next step. I like the a idea like a space invader game but in differents angles like in PvZ with the peashooter minigame. And could be better an different enemy like two shots with an X line of shooting?, But anyway I hope you can get to nintendo and be a great game designer!
It would not be an FPS. It's a fixed axis shooter kind of like Space Invaders or something.
In it's current state it's not much, but in a fully expanded game, possibly even in a larger Contra-esque world this could be very fun.
Well, for a start, I would build a full-scale version of it for the Nintendo Wii U, then depending on many different factors, perhaps try to build a version of it for Xbox One, PS4, I don't know. I'm simply concerned about the most relevant game concept.