Thanks for the comment! Indeed, the art isn't the same - it's the first time I've properly done any pixel art and was unable to match very well the art style.
What was wrong with the controls for the German Keyboard? I understand it's a different layout (I've used it myself) - I had set the game engine to use the physical key location rather than the actual letter although I didn't say anything about it. Did this not work or did the keybindings just feel weird otherwise?