Really love the artstyle + the shader work you did in your game, if your willing i would be really interested in how you implemented the water effect on the stone balls (maybe your willing to share the source for the project/shader?) :)
Well done, to give also some feedback the normal jumps feel kinda unresponsive (this might be due to not being able to use left + jump at the same time?? at least it felt like it)
Besides that really interesting concept and with more levels this has the potential to be a great game, and you already managed to create a really good base game :)