Oh wow .. this was a quick one.
I like the polish of the crt shader and audio, wish the platformer assets received a bit more love too.
The thing I like to point out, and maybe this is personal preference, but if you have those nice audio assets, explaining the player what to do/expect per level but already allow control, a player might miss a lot of those. So maybe create an event to enable player input after the initial sound of the level is done playing.
Nevertheless, congratulations on finished on your very first game jam! Be proud of your achieved work!