Chapter IV - V
This is an incredible boring achievement to get. You'll need to turn the screen hitting

and

without touching any other command.
If you fail, hitting

to rewind can't help: so you have to restart from the beginning (or the corridor).
I found a video on youtube (I take no credit for that), you'll find it below, but without a guide is quite useless.
The most important thing to do is hitting

while the hero is behind the veil, always take a look to the lamps, because they help you understanding the gravity's direction. Keep rotating with

(don't be confused by the video, that's the tricky part: it's always

).
One of the best suggestion is to make the hero slide very slow through the veil and while behind, hit

, then release it immediately when he slide out.
It took me almost half an hour of attempts, but if done correctly you'll need less then 6 minutes.
If you need any further explanation, please post a comment below.
EDIT:
thanks guys: it seems you can rewind, just don't move!