The background, dragon, floor all pretty nice. Good job. The artwork is cute. I would give that good for both graphics and atmosphere.
Great job on your 1st jam!
Seems on theme, good job there.
Those are some good Sound effects and Music for a 1st time.
I see no real story to this. So if you have some story I am missing, find a way to bring that out in the game.
As mentioned previously, it was a bit of a learning curve to just start. I mean, even to start the game I had to experiment to figure out how to press start. But once learned, the controls were fine. I had a bit of 'accuracy' issue where I thought the guy was standing on something but it did not count, so some kind of indication would be nice.