Shooting themed demo. Graphics are low quality, and they are zoomed too far away. You should make this game into different levels. Kill 20 in level one, and 40 in level two and so on. You should be able to purchase upgrades with your score.

If this is an engine or proof-of-concept, it's fine. I don't like enemies popping in close to you though.

As a game, it's boring af. No instructions or description. Two enemies and no upgrades. Not even a title screen.