Hey Alan. Thank you very much for the amazing feedback.
Yes the collider is a 2D plane, that's why its not as responsive as it should be. I am working on fixing this already.
The cheating mechanic is actually intentional. However, unless you are pretty skilled with using it, usually it will take you more time to complete the level using that mechanic, rather than following the natural path of the level.
For the block not being visible, i guess i can just make the block thicker than the walls and that should be an easy fix.
And yes that is the secret animation :D sometimes doing nothing in a game is not something we usually do, so you are the 2nd person from all to see that animation. <3