Fun game! I got a score of 92,870. I enjoyed the amount of ships you had and how everything in the game felt very fair. When I got hit I felt like it was always my fault and not a cheap shot from the game.
My only suggestion would be to have the score used for some form of shop system to upgrade the gun and enable the player to become more powerful. This could create a super good primary gameplay loop of always trying to beat a previous best score with better and better gear.
Overall, great game!