Overall pretty neat take on shmup controls. I think the biggest thing the game could use is a difficulty that reacts more to how well the player's doing, early on certain areas of the screen are basically impassable without the tighter controls of your average shmup, but once you get a swarm going enemies just get blown away a little too easily. I think the simplest patch would've been to lower enemy turret fire rate and adjust the number of enemies spawning based on how many player turrets there are. Still, I had fun, good job!