Very nice! Really really loved the main menu and how the frogs appear in pace with the song, that really did put a smile on my face <3
I also liked the story and the fighting-without-fighting part. although hitboxes could be a bit smaller for both bullets and player, they're conveyed pretty well for both of them.
The volume slider is really appreciated, too.
(Noticed some filtering issues with your sprites; this is very common with unity and pixel art. You have to select your sprite asset and change "Filter Mode" from "Bilinear" to "Point (no filter)" to get that crispy pixelart look c:)