Thank you so much for the feedback!
I originally intended for there to be a failure/death state, but I realized that the tutorial took a disproportionately long time to get through compared to the difficulty of the enemies (especially the shooting ones), and so at the last minute I scrapped the death idea and had enemies annoy the player instead. Given more time, I definitely would've had more there!
The same thing goes for the boss fight as well, I did originally plan on there being a boss fight! It would've been a large, circular spaceship that took up most of the room, and slowly rotated while performing different attacks (spawning enemies, various bullet hell-y projectile patterns). I find the idea is most interesting when the limitations are being pushed, I.E. when you have to multi-task in a ship literally incapable of doing so.