Pretty fun, here is some more detailed feedback:
This game was well polished and had lots of impact when you did stuff, and it was fun. You implemented squash-and-stretch but it feels... off. Maybe too slow, and at the same time, it doesn't have impact when landing, maybe squashing then, and some particles?
It feels kind of unresponsive when you JUST walk over the edge 0.05 seconds later hit space and don't jump. Research adding coyote time, it makes it feel MUCH better. Jonas has an entire video on this!
For the graphics, they were generic and nothing really special - if you can't draw, invest in a team! Jonas's server has many artists eager to work on a game / jam! I got a team with one of my friends and my brother, and, look at my profile and look at my two games. One is simple shapes and doesn't look nearly as good as when my friend did the art for my submission for this jam.
Alternatively, this would look very good with particle blood stain on the environment. No clue how this is done in Unity, I use Godot. But Unity has a wealth of tutorials on just about... Anything!, so I bet you could find some.
The concept of the game has been done over a hundred times this jam no exaggeration. It's good and a fun idea, but at the same time, it's been done so this time around didn't feel so much different. I'm not subtracting this from your score much because I can't blame you. But here's a tip for coming up with jam ideas: Spend 5 minutes and write all of your ideas. Then tear that paper into a ball and start over with none of those ideas, unless one is REALLY unique and stands out a LOT. That's what I did here, I threw away 10 minutes of brainstorming and got a concept I loved for this jam.
AND THE THUMBNAIL: Good thumbnails lead to higher CTR lead to more plays. We spent a few hours on our thumbnail and our CTR is about 1.4%, which is much higher than average.