The art and game concept are amazing! The sound is also pretty good :) Love the fact that you added text above the head to guide the players.
I would consider adding character animations when moving (like wiggling the ghost tail) and rotation. The camera also becomes weird with some collisions and the text above the players head is not visible if we zoom in too much (we start a very close zoom).
But overall.. You did an amazing work, congrats! :)
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