I WON! It took me around 5 tries.
I think the game looks very good, it controls perfectly, I like dying in one hit if I fall, it adds some tension and the bullet patterns of the boss are very fun to dodge, I really like those. The gitch command is fun to use, that it totally freezes the game and the commands won't respond for a small time makes it feel like intended. The life bar of the character and boss were adequate to me, I thought the difficulty was appropriate.
I feel like the game would feel even better with autofire (and either way I would have preferred autofire) and the player's character shooting much faster (and the life bar of the boss increased in proportions, its life is fine as is).
Very fun!