Thank you so much for this wonderful, and really helpful feedback. As you can see most of my effort went into the woodlouse asset. It is my intention to revisit this and improve the art work for all of the assets in the scene.
I like the idea of the milestone goal, I really wanted to have a highscore leaderboard too, but that proved too much of a challenge for my limited coding ability in the timeframe. The clouds in the background changing to rainbow clouds was as far as my visual reward skills stretched for the time being.
I will try to stop that scrolling asset bug too! Thanks ever so much once again.