Once again a very nice game that reminded me a lot of “Mouse Trap” from CBS Colecovision. Our German-language review can be found in our recorded livestream starting at 00:40:47. English subtitles are also available this time (switch on, if necessary). 🙂
When moving the joystick diagonally, the priority direction is horizontal, so if you are moving vertically and move the joystick diagonally, the character will move horizontally, but vice versa it doesn't work. However, consider that the original arcade version uses a 4-way joystick and therefore the diagonal is not foreseen.