Fun game! I liked the artstyle, and the music is really catchy! The boss is also pretty good, but maybe the sfx need more work. I'm not a huge fan of the 8 bit feedback sounds, and the cannons sounds are fairly weak. I like the slow down effect when you aim at the boss, and the mechanic is pretty fun, tho it would have been nice to have a slow down sfx to make it juicier.
Overall I had a pretty good time, great job! :D