Great work on the game, truly a time sink :)
Game play felt solid, loved the upgrading system.
The balancing could maybe do with a bit of work, it felt like the most efficient way to play was just flying away in one direction and spamming projectiles behind.
The thruster speed and the enemy speed basically meant that it's hard to do any type of evading so it doesn't really feel good to fly towards the enemies at any point, which is a bit sad for a twin stick shooter
Some background music would also go hard with the game.
But overall, I had fun with the game and the entry is really solid!