I see by your description that you know that many things must be fixed and I applaud you for finishing a playable version of the project and releasing, this is what jams are for!

Actually one of the main reasons I like Miziziziziziziziziiz and why I entered his jam is this philosophy of finishing things even if they are not perfect, learning from it and applying what you learned on your next project. I think you have the right mindset.

Nice idea, but definitely needs some work as you said.

It's a very cute game.
The screen is a little zoomed in.
so its sometimes hard to see the platform you have to jump to.
The story is cute and funny.

This is a fun concept of becoming the sword and shield, I found that funny

This project would have really been improved with a checkpoint after the sword and shield gameplay starts and some SFX, though good job! 

For a first entry, it's not bad. According to the controls on the page, I can't get any of the interesting mechanics to work. However, from what I'm gathering, it's your first entry to a jam, maybe even first, so keep it up! Attacking worked, the enemies worked, jumping and collision worked - it's a solid start to a fine jam-career :D

If you're exporting to WebGL, make sure to enable the optional Fullscreen button in Unity, this sometimes helps with these weird zoom-in bugs :D