At the first wave I thought wow this is way to easy, bc your ship could move really fast and dodge everything. Then you started adding in alot of the thingies and then it became fun. Doesn't have alot of diversity as far as enemies, or mods to your ship. A thing you could do is add it so you get points the further you get, then use those points to increase health or gun. Why? Cause then you feel like your getting somewhere everytime you play. Only downside: You can hide in the bottom corner and just shoot. Way to fix this: add in invisible barrier that prevents the ship from going in the corners, or add enemies that are also ships that chill out at the top for a little, shooting, and you cant attack their lasers, so if you hide in the corner you die. Kinda fun game though.

Not that challenging. Just hide in the lower left corner and keep clicking.

TBH, the main reason this is fun for me is I use a laptop and have a mouse and shooting has no cooldown, so I was able to really spam the guns with my mouse and the touch pad button..haha.

I would consider changing that, maybe having it wait a few frames between each shot. Adding some power ups/mods for the plane (maybe a super limited use bomb for clearing the map...) and some new enemies/bosses would definitely flesh this out into a nice little plane game. Good luck if you plan to continue developing it!