I think I'm just gone put some hints out here for people to read if interested.
General tips: So first of all, you need to know about the mechanic of the platform.
If you first enter a platform: its active.
Only if you activate the other two platforms: the door will check, if you entered the correct code.
In case of it being the wrong code it resets the platforms to inactive.
Make sure you reset the platforms if you started with the wrong one.
The developer log is still visible, you see it on the top left it tells you if your platform is active.
Level 1:
We wanted to add some sort of color change of the runes or a sound which would show that a platform is active.
But time didn't allow us.
Just use the camera rotation here and make sure to look carefully at each and every rune!
Level2:
There are basically two machines here one makes you bigger one makes you smaller.
You need to use those smart to get through the maze.
Level3:
You need your sound on !!! otherwise this is unsolvable.