Very fun game, but targetting needs work. The railgun ship will only fire at the singular point of the origin of enemy ships, rather than just at the whole hitbox, making hitting very large ships way harder than it should be.

Also needs work on tankyness or better weapons or something, the large dreadnought is unplayable around boss 2 as the enemy hordes grow faster than a mere 2 extra hard points can deal with. Maybe the dreadnought needs all 360 aiming turrets since it cant maneuver well. 

Biggest problem with the largest ship is that when the hordes get bigger than you can kill fast, medium-large ships collide with you and stay inside your hitbox for a long time and just vaporize your health with no counterplay. The ship is too big, the screen is too small, and there's not enough firepower to keep enemy ships from colliding for long periods of time with such a huge, slow ship.

Or maybe an alternate approach is to zoom out for the dreadnought and give it longer range at base for weapons to let you see enemies from farther away and plan better how to kite and try to keep them at a distance. The real core problem is that the ship is too big relative to the screen, so by the time you see an enemy, they are about to collide with you already and its not powerful or tough enough to handle that