The +

- There's a cover image

- Willingness to create several attacks for the boss (a boss is not easy to make and it takes time) 

- godot is a good engine

The - 

- Bug: Enemies don't fall: they run into the void

- No music or sound effects

- The tutorial sentence goes by very quickly, so there's no time to read it (+ remember to set the sentence to English by default, not Italian). 

- The boss has no reaction when you stand in front of him, so depending on how you position yourself, you can easily attack him.

- After one death, I got stuck in the fire (the 2nd one). 

- After the end of his life bar, no death, or continuation of the game.

I can see that it's been a bit of a struggle, but at least you made it to the end and published it. I hope it wasn't too horrible an experience and that you were able to learn a lot ^^.