Thank you !
Yeah I didn't have time to add particles or sound when bullets collide, but it's the first thing I added after submitting because it really helps understanding what's going on.
I'm really on the fence with the timer placement. I see how its placement hinders gameplay significantly, but it's placed there deliberately for aesthetic purposes. I still don't know what I'm going to do. Maybe make the outline on the bullets thicker (they have a slight black outline).
In any case thank you for your comment !