I Teleporter to PortalII, behind which there is a secret.
You have to be very fast, as the wall closes quickly.
After using the ladder, it is good to step left right away, to save a second.
Moreover, you shouldn’t turn around as it only makes it longer.
1.2 The secret wall opened using the underwater switch (1.1).
You will enter the Shrine of Balance.

Put all the stones on the table and they will turn into Essence of Balance.
Now, go to The Hub and the door which was closed before will now be opened.
After defeating him, you will receive a key to this ending.

[1] Cursed Compass - useful in Twisted Passage.
It would be best to memorize the route, not to encounter a wall.
Don’t enter the square frontally, but from the left side.

Otherwise you may be too slow.

