I love the style (nice die animation). I haven't seen many people use Makecode Arcade (I had to do some for school but found it a bit fiddly, compared to similar engines like Scratch, but that's just personal preference), but you made a really fun game with it.
Feedback:
The jumping is a bit floaty, maybe add more gravity. It's also a bit annoying that you go back to the menu when you die rather than the start of the level. I also got this bug where I could only move along the bottom and the screen had a white overlay:
With that being said, it's a really fun little arcade game, with a nice story. Good job, and keep making games!