Good concept but there needs to be more polish, I know this is your first game jam and I can relate because this is my first one too, but I feel like this game could have been greatly improved with some visual feedback like little animations or a health bar for the ghost (that I never defeated). I also feel as if both the player and the ghost were smaller, there could have been movement on the x axis of the game which would have improved the game drastically. Overall there is a good base but it needs to be expanded upon because the way it is it feels incomplete and rough around the edges. Good for your Game though, as it is a learning experience.