Hi!
My record is 65900!
Nice game! Unfortunately, there are many such games, and there is little innovation here, as well as compliance with the theme in my opinion. But if you look at the gameplay, graphics and music, the game looks very harmonious. I am amused by the fact that the game, as you say, uses vector graphics, but visually it looks like a pixel one :).
Regarding the shield, I noticed that it takes more power than you lose from enemy bullets, so I hardly used it :).
It would also be good to add control information to the game itself, as people don't always read the comments and start playing right away. It would also be nice to have an in-game music on/off button as an option.
In general, a good game, congratulations!