1. After I introduce the new character, the cat's walking values will be increased to match her, as the new character can only walk, so her speed should be increased. This should help a lot with the discrepancy between walk and running.
2. I would agree with you if this was going to be a straight platformer, but it's going to shift away from traditional platforming as the new character unlocks in the next world, becoming more of a puzzle platformer. I think it's fine in that particular context, but I can see that not being apparant given the content of the demo. Still, I didn't want to add that character until world 2, as to not bog the first world down with endless tutorials. The ball pit and the blood from the boss are both intended to be chaotic as well, especially for the boss, so all is well, I think!
Thanks a lot for playing my game! I hope to see you at the next demo!