I sense some Undertale inspiration here. It's a good arcade idea. It lacks things that could add to the experience like sfk and vfx for feedback. The timer for passing level could be some other thing like collecting colectables, keys, etc too, would be more dinamic and funny.

I wish the rounds were shorter or you restarted at the last level. Great concept!

Fun little shield blocking game, I enjoyed the concept a lot but I found that I could just stand in a corner and block a lot of the time. To improve, I would actually make the game harder, by making pretty much everything move quicker, however also making the round time shorter would make this a much more enjoyable game. Good job!