I'm sorry for if what I'm about to say offends you as it's my intention to help not offended with that said....
I can not help greenlight this as I do not believe it a viable product, from what I see you have 1 kind of weapon and 1 kind of poorly animated enemy and nowhere near enough customization to separate this from anything someone could do in days in Guru. The base idea however is sound, just needs some fresh and innovative ways to push it further before I think it should be put forward as a product for sale, even the video show casing your game needs more effort put into it. A custom graphics showing your games title and not some text on black background.
As I said the base idea is good and you are off to a good start but this should just be the basic outlay for your game not the finished product.
Kudos to you for trying to get a game out there and good luck with it and any other game you release in the future. Hope this doesn't come across as negative
PC Specs: Windows 10 home 64-bit, Amd 7900 3gb DDR5 graphics, 8gb DDR3 Ram, Intel i7 3.4ghz