Hello,
It's an interesting and fun-to-play game, just love shooting the enemies out of the way. A few things need to be polished in order to make this a good game to hang on to, like for example, the player should be restricted to stay within the camera bound, adding a slight screen shake on bullet shoot or enemy explode, understanding the Game Flow Theory while adjusting the difficulty accordingly, and a few other things like this. Possibly this game has good potential for casual shooting and users spending their free time shooting some enemies.