I recognize this character as appearing later. It was a bit confusing exactly how you were weakened. I thought it was as simple as being hurt by the trees. Apparently, you can't go too fast or you'll fall off. What's wierd about that is the game says I have to move faster. Yeah, I guess I should have looked at the instructions first.
The graphics are decent, although they do look a little dated. There could be more detail in the ground. It's just the same grass design over and over. It's still fun to kill rabbits. Pink is of course the best color to make of animals you're killing.