Interesting..
Would like to see where this is going.. Cool trajectory on "weapon" and although pointless right now the game is not terribad so it I deem it worthy of the portal. My suggestions for eventual updates would be music and sounds to go with the art style. Depending where you want to go with your project you could add more "weapons" and "enemies" to make it a defence shooter, or you could go on with the story that it is a menial task but if players persevere it reveals a richer storyline. Something like that anyway, its your game so develop as you feel and good luck happy coding :D