I'm sorry I hate platform games because I'm not good at them. What I did see of it is a good start and I think with some more time would be a great game. This game begs for coins or enemies to make it more interesting. The player is a little slippery so sliding off a landed platform is frustrating. Also the camera lags enough that it's noticeable. A LateUpdate or FixedUpdate on your camera controller might fix this.