Fun polished game! The laser boss destroyed me with a few shots (I am sure there was a trick to it hinted at the beginning but I didn't read it because reading for suckers lol)
I would have liked to have seen some sort of power-ups (like a shield, health boost, or laser spread) because the extra "bad guy" added lots of clutter to the map and the reward for killing them wasn't 100% clear.
Also, your ship health UI is at the bottom left, which is opposed to the boss's health, was too much focus shifting. With everything going on the screen, I was not able to at a glance how well I was doing.
These are small nitpicks. That game is very well crafted and polished. I review it highly because I can see a lot of effort and care went into its design.