shadows like i've never seen before, wish i knew how to do that, my fastest run is 21.6s, again, superb visual effects with the shadows
I appreciate that you like it :)
Look at this tutorial for Godot shadows and lighting:
I did basically the stuff from the tutorial and I also used a CanvasModulate to make the non background tiles dark. Hope this helps.
EDIT:
Just saw that you're game is made in Unity. can't help you there sorry.