Fun writing with a very cute premise!
There are lots of creative and unique bullet patterns, but I gave up on actually dodging any of them pretty much immediately. To that end, I think making the swords charge much, much faster (especially the bullet-clearing one) might've helped it work more as a game?
If you're leaning more into the visual spectacle than the difficulty then you may as well make the player over-the-top powerful as well, otherwise the players who care about not getting hit will feel powerless and frustrated even with infinite lives