I got stuck on test chamber 10. If anyone is reading this and is also stuck... well, I won't give spoilers, but I will give a few helpful hints that should help:

1) You leave in the present.

2) The button must be pressed for you to reach the exit.

3) The button cannot be pressed in order for you to leave the chamber.

4) No, there's not more to it. This chamber is really that simple.

5) You know what needs to happen. Think about when and how each step will occur.

a hint for the chamber is: thinking with portals

make a actual guide please

They are waiting for you.
In the test chamberrr.

test chamber 10

Thank you for the guide

It was pretty hard to beat but your guide helped a lot, thanks

ah yes an intellectual

Indeed a very helpful guide. I will remember this when I gonna beat this chamber

test chamber 10