I clipped through the ceiling in the second level 10/10 :D
You shouldn't mislead with your thumbnail, that for sure.
Was it made in TGF/MMF? Because it sure looks like it, including the ability to hang off clifs using your chin.
What I can say, is that if the player needs to fight the controls, it's usually not the best game design.
I remember starting out using TGF myself, hoping to see you learn and grow :)