Good concept. It was a cool-looking art-style. I wonder if it could be more forgiving, maybe, like if you had multiple lives? That might just me being bad though. Also, maybe make the bullets a bit faster so that the player didn't run into them as often? Also, I know time and stuff, but it would be useful to have a cool down on the gun maybe? I liked the scoreboard feature, but it was a little under-presented, and I almost didn't notice it.