Visuals and sound effects were great, laser sounds were nice and powerful sounding. I liked the little radar in the corner to show where enemies were coming from and what size of enemy they were, a handy feature.
It was kinda hard I found to actually kill enemies since shooting at them moved me away from them, thus pushing them off screen and presumably out of range of my projectiles. But I'm guessing have projectiles go off screen would make the game too easy.
I ended up getting a high score of 2450, don't know how good that is or not, but the game was fun for the time I played it. Nice job!