Could be better
Not sure if you used the game factory widget to make this since it looks amazing like something made from it.
Things to improve on
Graphics:
Just shooting isn't aligned with your hands when you move.
Movement is blocky when you change directions.
Also, give instructions more clearly in the front. Make sure to state that in the menu you need to use arrow keys.
Make your font look more professional. Using the standard font like that doesn't help your image much.
Menu Background would look nicer.
In-game Stats text- this just looks terrible. Maybe make a sort of HUD for it. I'd advise you to look at other games for an idea on how to show these stats.
Also, perhaps little tool tips when you get new weapons so you know their effects better.
Things that were good:
Two players :) great idea!
Weapon progression is good, as well as tossing grenades different distances.
Custom controls is a great thing, could lead to the possibility of more than 2 players perhaps.
There's definitely potential here. Reminds me of Boxhead 2 play, and I would definitely play this w/ my bro once it's more streamlined.