While it's clearly unfinished (as you stated) it looks like you learned a lot during the jam, and that's awesome! The character and environment look nice, and the charge jump is a good idea. I managed to jump to the platform behind where the player starts too, so I'll call that winning the current build :)
I'll come back and check it out again later, to see how your updates go!
PS: Can you turn on the "fullscreen" button through the itch dashboard? I'd like to see at all larger!