The movement of the cube is actually quite fun, except it seems to be a bit inconsistent when you are allowed to do a wall jump or double jump. In contrary, the ball and chain doesn't really seem to work well. The level (levels?) could have clearer goals, as I was multiple times lost, and transitioning can be made smoother then a teleport.
Over all, there seems to be a lot potential, and I hope that you have learned a lot for the next time :)