About the sticking on the walls glitch.
Hello,
I am one of the creators, I wanted to inform the people that have problems with stickicng on the walls that this is not a glitch. Sticking on the walls requires to keep the UP button pressed. In the earlier levels all the abilities were available, as a result leviation+sticking gives the impression that you don't have to press any buttons. When you have those two abilities activated together, since you levitate, pressing up to remain sticked is not required.
We are working on a walkthrough at the moment and it will be available soon.
If you have any questions feel free to contact me. Thank you :)
Cheers
kolio