The base idea is pretty cool here, I’d love to see what you would create with more time here. Two issues I have atm are the following:
Sometimes enemies just don’t respect the “time stops if you move” rule, they just fly straight forward as they would.
Since you can be hurt by your own bullets, I would add some kind of red highlight to them so the player actually sees them, because on the first few runs I was kinda puzzle what killed me.
Your UI and effects (trails) being off-resolution is kinda a bummer as well, otherwise everything is in place for a cool game for the future! Graphics are nice, shoot sound could be a bit deeper but is not bad. Well done!