I couldn't use the umbrella at all. Fixed it, now it works.
Mini vision is annoying. Unless you are constantly changing between it and normal vision you'll be missing out memories, teeth, bottles, etc.
Invisible borders ARE a bad thing, they kill the immersion. I can't explore nor can I climb up the awesome shrooms, trees, pipes and stuff. Now it feels much more like a pipe run.
Forced battles as in there are constantly enemies that have to be killed to proceed. Kill all monsters, door opens, etc.
But dear lord the game is stylish and beautiful.
Nice references to the first game at times.

Recycled comments from the first game at times.
