Nice bullet hell! I'm assuming all bullet patterns have the same dps? Would be nice to see some mechanic, which would encourage player to switch between them, like you get temporary damage buff for one of attack patterns, which encourages you to use it. Otherwise it feels like you can just use laser, if you are in front of the boss and spreadshot, if you on one of the sides. Also 2nd boss "arms" felt a bit too sturdy.