Thanks for the feedback; previously, people who play my games would give up at the first or second level, no exceptions. I've just uploaded a video of the last level in case you want to see how it's done.
Sure. Oh that's how to do it - ha ha. I always turned left at third 90' corner - because there is no clear indication of turn direction.. First and Second corners have smooth rounding wall - which indicates where to turn ps. thank you for video