Aesthetics are nice, but it's sad the game is lacking any sort of audio.
I would have liked to have been able to move forwards and backwards too, it would help with dodging the projectiles.
I think there is a bug with the firing, or you have implemented anti spam? But if you repeatedly press fire, nothing happens, if you press it every second then you can continue firing.
I played this game because I wanted to find out who stole my eggs, while I have a better idea of who it was, I still want to find the culprit and deal with them :)
Nice work.