Fun
Basic platformer. Not difficult and spent most of the time just walking.
Aesthetics
Very good. Charming, animations looked good, colors looked nice. There were some slight bugs with parallax. The game tutorials rarely completely fit on screen. I think it is a bad idea to display half a sign or a quarter of a sign.
Music
Decent, but seems like beginner work. Could be improved, but I didn't hate it. It matched the aesthetics.
Sound
Great sounds. Everything matched the game mood and didn't distract from the game itself. Good use of rising and falling pitch.
Mechanics
Poor. The movement felt slightly slow.
Dark water kills but blue water is fine. This comes immediately after we are told water is safe.
There are a number of blind falls. The camera needs to show where I am landing, especially if you put spikes at the bottom.
When you die the final boss gets stronger. Negative feedback loops should be reserved for more hardcore games. You also have no way to keep track of your deaths and you don't get to experience the mechanic until the end.
Story
There's a death wizard? That doesn't seem to make any sense. Why are you a bean?
Theme
The theme is death is only the beginning, but this mechanic barely qualifies. The music, sounds, and aesthetics all work together very well to make a theme, but the story conflicts with the theme, and the core theme of the game jam feels like an after thought.
Good work on the art assets. Otherwise needs some work.