Good start, I like the pixelated style you selected.

Walking speed could be increased, I used Shift constantly to run. Maybe just run always?

I also lack health indicator.

You have nice backgrounds, with appropriate music it can become very atmospheric.

Really beautiful artwork. I would love to play an update after the issues others have raised are addressed. 

I really like your art style. However, there is much room to improve on after the jam.

Feedback/Suggestions

• Your movement is really inconsistent and unresponsive. I'd have to hit the up key several times before I would actually jump. Walk speed is really slow compared to your run speed. Jumps also seem to only carry the x velocity of the run speed only. So if I'm walking and then jump, the character is flying all of the sudden. Its pretty jarring from a player's perspective. I think this is the most important thing to work on after the jam. Even if its just simple movement (no wall jumps, dashing, etc), you should be consistent with it.
• After you've worked on the player, I would start thinking about how you give feedback to the player. Like clearly communicating that the player is taking damage. You have a screen shake, but it too was a little jarring. I also think screen shake in general doesn't work for your art style. Knockback with a sound and a hurt animation would be great.
• Your game is missing music, which isn't technically a bad thing (it can work for certain games), but without any other sounds, it makes it harder for your game to capture a player's attention. Grabbing a CC0 track from opengameart would be completely fine if you don't have time or the skills to make your own music.

Overall, there's a lot of work to be done. But its a starting point and I hope my feedback can help your continued work on it.

All the controls felt very slow, and there was no indication of health or how to dodge and incoming attack

Hope you work on that after JAM

The game is currently unavailable, will this be submitted eventually?