Took a little getting used to how the double jump works. seems you go higher the faster you jump.
Some of the jumps seemed to be a little tight.
Some problems with the colliders, I fell through the floor a couple of times and kinda of cheated at one stage by getting stuck on the walls between colliders I think.
I can see where you want to go with the theme and I think it can work wonders in a platformer like this.
Keep up the work, would love to see this get something more.