Hi, I've been playing your game for a while and I've noticed a couple of things that could be improved.
Sometimes enemies would spawn right next to my ship, which didn't seem very fair.
I think the combat system could be improved. Currently, my ship is more like a turret, which just stands in place, as flying away from enemies is not profitable. It would be good if manoeuvrability gave its own benefit in battles too.
As the game progresses, the frame rate drops and the physics of my ship's projectiles don't work as they should. They just fly through enemies.
In any case, I don't regret spending time on your game. I was really engaged by it.