Really fun concept, the movement is quite original and I think it could be expanded into something really cool !
But I think it is a bit too hard at the moment, especially at the start when you try to understand the controls, as any jump can lead you to death. I kept thinking the double jump would send me in the other direction, having a visual indication could maybe help for that. Maybe having a health system would solve it simply, as it would allow for error without having to restart the game every time.
However it got pretty pleasant once I got the hang of the controls. Well done :)