itch.io

Oh, I thought it was intentional trolling, and honestly it worked pretty well.
I am sorry if my previous comment upset you, I am not offended.
As for proper feedback, please make the walls a bit wider than the character, or make the character smaller so it is easier for players to move through the level. It would also help to add a short tutorial or a small note explaining how to move, since not everyone uses WASD. Gradually increasing the difficulty would be great too, for example by making each new level a bit more maze-like. In that case, adding a level counter or a small progress bar at the top would be useful, and you could even end with a very difficult or a very easy “reward” stage.
You could also give players a coin for each completed level, and at level ten let them exchange coins for a skin or for more coins. The cube skin could be available at any time.
Regarding the visuals, it is better to use a solid color with simple light and shadow in the same palette (one lighter, one darker). This will prevent glitches.
I hope some of this will be helpful in development or at least brighten your day. I wish you success moving forward!