Here is a little tip. Your game doesn't actually scale up with the full screen button, so I would go into your game settings and find the button that says to allow fullscreen and turn it off.
You also need to put the directions in the description below the game. You can still do that now. I couldn't do the second level, because I don't know what button I need to change characters.
All of this is stuff you have to learn when you first start uploading games to the internet. I see that you're new, so no harm no foul. It'll just help your ratings for the rest of the jam.
Good job making something that works. That really is an achievement you should be proud of!