Answer 1

It's pretty good, but try and use the fog filter for gameplay as well - very often foreground layers and similar-looking background layers make it hard to see where to go. There's also a camera problem when you're going all the way up, preventing you from seeing the (attacking) book coming.

Answer 2

Zooom.  Ouuuuuut.

Answer 3

Thank you for creating levels that put me to the test.