Awesome
I really like this and feel it has a lot of potential but needs to be seen as an experimentation.
I really liked the graphics and the enemies are very creative.
You can improve by adding friction to the aircraft's movement, maybe some rotation as well when you move in the forward and backward directions. Maybe add a small story line nothing serious just some text and some slightly animated illustrations and some humor. Something I also noticed is not being able to shoot the enemy projectiles. Another thing to look into is the improvement/ upgrades and purchase of weapons and armour, or perhaps allow the player to create their own aircraft by using a drag and drop interface.
Overall it was pretty good as an experimentation (which is why I'm giving you 10 stars as I'm rating it as an experimentation) but not great as a standalone game and by no means complete.