Great graphics, love the floaty Celeste hair. I wish I knew how to do that.
I appreciate the amount of attention you put into the level art as well as the dialogue.
Such a cool mechanic! I wish you'd introduced it in a more contained area, as it was overwhelming falling into the sky right out of the gate.
What a reveal on the shadow monster! Love that.
I feel that you're ramping up the complexity in the quantity and amount of enemies, as well as the mechanics too fast. I'm going to borrow a comment I made on another jam entry because it's relevant here, too, for solving this issue:
With something this unique, your average player will need you to start simpler, and very slowly ramp up the complexity. Portal is an excellent example. First room: walk through a portal; you win! Second room: grab a box and put it on a switch; you win! Third room: walk through a portal (at the right time), pickup a box, walk through the portal again (at the right time), put it on a switch; you win! It seems dumb when you look at it laid out like this, but there's a reason Portal is so widely acclaimed. By ramping up complex/unique mechanics over time, you ease the player into understanding the playspace possibilities. Then you can do all sorts of fun crazy stuff as the game goes on and player skill increases.
Also, please add an in-game tutorial for my sanity.
I really like this concept and world. I'd love to play a full version of this game if you choose to continue development.