It's a pretty cool idea to make puzzle platformer with the jam theme, I wish it had been a bit longer because some of the mechanics had a lot of potential. I understand that you tried to make each screen very unique, but I think you could have squeezed out more of the mechanics that you already had implemented. Also, I like the greek mythology inspirations in the plot. Finally, just a minor suggestion: objects that appear in pale blue during the night could be pink/orange during the day. It would still fit well with the black and white aesthetic but it would convey better what object does what.