Game's story and tone reminded me of Torment: Tides of Numenera and a little bit PS: Torment. I think artwork is fine for jam entry, it kind of fits the abstract theme of the game.
Combat didn't feel very intuitive and engaging. Switching to the ghost is a nice touch and it adds some depth to combat. You die very fast in the game. I managed to throw all enemies into the chasm on level 1 and managed to reach level 2 , quit the game after dying there a couple of times. I wonder how many levels are there in the game and are there any additional content further down the way.
My opinion is that you had somewhat a story driven gameplay experience in mind while designing the game. Game has an interesting mood but not sure that it has enough content or a fun gameplay loop to keep the player engaged and play further in it's current stage. Btw i like the UI, menus, dialogue boxes too. It has kind of a 90's isometric RPG vibes.