I really like the music and the graphics on the menu. Great that you were even able to add voice acting. It is very rare that you see this for a game jam entry! The game itself might still need some polish. I could not make it far, as I could not figure out on how to jump higher. Inside the game the art got also a bit inconsistent (different styles and outlines), so I think it would be worth to make this consistent. If you include platform jumping I would ensure you have good platformer mechanics in place. For example "coyote time" is something which is a must otherwise jumps from one platform to the other can be very tricky.
I still think that this is a very good base for a cool! Well done and keep working on it! Congratulations to your entry.