Oh my, what a game!
First of all it's a very chaotic fever dream like experience, which isn't a bad thing! The controls are a bit wonky of course, but for a first game jam, this is absolutely not a bad submission! the game is fun to play, and it's got all the core mechanics for a nice little 2D jump and run.
I'd just like to say, that you probably shouldn't mark the game as playable with every plattform, if you only include an .exe file in the zip, but that's really just a minor detail, that has nothing to do with the actual game.