First of all I want to say that I really liked the art. The weather effects, the voxel art style and the particles really create a thick atmosphere and combined with the music and sound elevate the game a lot in my opinion.
The main mechanic is interesting and feels nice to use. The floating and double jumping feel great.
However I think where the game falters is the level design. It's often not clear where to go and the readability of the platforming is not that great. I also started on keyboard and found it to be very awkward to control with only 4 directions because of the angles you have to move at. But after switching to controller it felt a lot more natural.
The story was a nice touch too.
Decent Game. Keep it up.