Dang, this is a really straightforward idea and it works so well! Great job! I think the difficulty ramps up a little faster than my mastery could. I couldn't finish it because I was so bad at dodging the shuriken. The animations and controls feel really good, but maybe the level design could use some more time in the oven to help the player master the controls before throwing a ton of enemies at them? The real magic comes from being able to take out enemies, but putting so many on screen made that a bit difficult.
Very well done overall. Congrats on making this in the 48 hours!