An amazing work. The character reminds me a little of Little Nightmare. The crafting system is a nice addition to the game, it's really interesting to have this kind of features in a platformer game.
One downside for me is the fox/cape, when you make it return to you it takes a long time since it decelerate when it's near you. If you make it return when it's really close to you it's nearly instant and it's nice. You could either allow the character to move while the cape is going back to it or make it faster. In doing so there's less downtime when using this nice feature.
So .. on steam when ? :D
PS: I've also rated the game