I enjoyed the mood of this game! Fits the theme well. And great job considering that you recently started with Unity. I had difficulty with the movement too as @magneticduck said. I think that may not be where the "fun" is in the game, and so maybe look into different approaches for character movement controllers (e.g. when arrow keys are held down, set the velocity to a fixed value instead of adding a force, or maybe some drag). That needs tweaking. But wonderful entry! I really did enjoy this, and there were lovely sound effects too which is often overlooked but crucial.