I really like the game and the art style and I have continued it in very much the same way.  I focused on adding new mechanics and polishing them along with the existing game.

Ghost Platformer [Godot 4.1] by Dani_Swordfish for DAY 2 - Pass the GAME Challenge 2023 - itch.io

Looks very cool! A web build would be nice. Also you might want to add "Godot" to the games title in order to make it easier for Godot devs to find your awesome game.

Been working on this one all day, having a lot of fun with it!