Nice game! Art, music and controls are on point! Loved that the controls are just a little floaty, I think it makes a lot of sense in a spaceship game, gives a sense of inertia that I really liked. The graphics are well done, its a pleasure to look at, specially the animations of the asteroids exploding. The boss is pretty cool too. The only problem is what people already pointed out that the firing is unpredictable and that makes the game a lot harder, even maneuvering gets harder because you can't tell if you're going to fire again in time to clear that one asteroid out of the way, stuff like that. Also, one or two more power-ups would add a lot to the game loop I suppose. But overall I think it was really enjoyable, congrats!