You copied our idea :D Or did we copy yours? :D
Anyway, I really like the graphics and animations. The music and sound is also very nice and the variaty of weapons. The controls are ok, but you are overwhelmed by enemies way too fast.
There are just too many enemies and too less weapons.
Your game also feels a little laggy, but a lot of people mentioned that already.
I would be honored if you check out our game, because we went for the same idea ;)